diff --git a/src/cache.ts b/src/cache.ts
index 2bab9d370..5d82f4668 100644
--- a/src/cache.ts
+++ b/src/cache.ts
@@ -1,29 +1,32 @@
 // deno-lint-ignore-file require-await no-explicit-any prefer-const
-
-import { Channel, Guild, Member, Message } from "./structures/mod.ts";
+import { ChannelStruct } from "./structures/channel.ts";
+import { GuildStruct } from "./structures/guild.ts";
+import { MemberStruct } from "./structures/member.ts";
+import { MessageStruct } from "./structures/message.ts";
 import { Emoji } from "./types/emojis/emoji.ts";
+import { PresenceUpdate } from "./types/misc/presence_update.ts";
 import { Collection } from "./util/collection.ts";
 
 export const cache = {
   isReady: false,
   /** All of the guild objects the bot has access to, mapped by their Ids */
-  guilds: new Collection<string, Guild>(),
+  guilds: new Collection<string, GuildStruct>(),
   /** All of the channel objects the bot has access to, mapped by their Ids */
-  channels: new Collection<string, Channel>(),
+  channels: new Collection<string, ChannelStruct>(),
   /** All of the message objects the bot has cached since the bot acquired `READY` state, mapped by their Ids */
-  messages: new Collection<string, Message>(),
+  messages: new Collection<string, MessageStruct>(),
   /** All of the member objects that have been cached since the bot acquired `READY` state, mapped by their Ids */
-  members: new Collection<string, Member>(),
+  members: new Collection<string, MemberStruct>(),
   /** All of the unavailable guilds, mapped by their Ids (id, timestamp) */
   unavailableGuilds: new Collection<string, number>(),
   /** All of the presence update objects received in PRESENCE_UPDATE gateway event, mapped by their user Id */
-  presences: new Collection<string, Presence>(),
+  presences: new Collection<string, PresenceUpdate>(),
   fetchAllMembersProcessingRequests: new Collection<
     string,
     (
       value:
-        | Collection<string, Member>
-        | PromiseLike<Collection<string, Member>>,
+        | Collection<string, MemberStruct>
+        | PromiseLike<Collection<string, MemberStruct>>,
     ) => void
   >(),
   executedSlashCommands: new Collection<string, string>(),
@@ -78,28 +81,28 @@ export type TableName =
 function set(
   table: "guilds",
   key: string,
-  value: Guild,
-): Promise<Collection<string, Guild>>;
+  value: GuildStruct,
+): Promise<Collection<string, GuildStruct>>;
 function set(
   table: "channels",
   key: string,
-  value: Channel,
-): Promise<Collection<string, Channel>>;
+  value: ChannelStruct,
+): Promise<Collection<string, ChannelStruct>>;
 function set(
   table: "messages",
   key: string,
-  value: Message,
-): Promise<Collection<string, Message>>;
+  value: MessageStruct,
+): Promise<Collection<string, MessageStruct>>;
 function set(
   table: "members",
   key: string,
-  value: Member,
-): Promise<Collection<string, Member>>;
+  value: MemberStruct,
+): Promise<Collection<string, MemberStruct>>;
 function set(
   table: "presences",
   key: string,
-  value: PresenceUpdatePayload,
-): Promise<Collection<string, PresenceUpdatePayload>>;
+  value: PresenceUpdate,
+): Promise<Collection<string, PresenceUpdate>>;
 function set(
   table: "unavailableGuilds",
   key: string,
@@ -109,41 +112,60 @@ async function set(table: TableName, key: string, value: any) {
   return cache[table].set(key, value);
 }
 
-function get(table: "guilds", key: string): Promise<Guild | undefined>;
-function get(table: "channels", key: string): Promise<Channel | undefined>;
-function get(table: "messages", key: string): Promise<Message | undefined>;
-function get(table: "members", key: string): Promise<Member | undefined>;
+function get(table: "guilds", key: string): Promise<GuildStruct | undefined>;
+function get(
+  table: "channels",
+  key: string,
+): Promise<ChannelStruct | undefined>;
+function get(table: "messages", key: string): Promise<MemberStruct | undefined>;
+function get(table: "members", key: string): Promise<MemberStruct | undefined>;
 function get(
   table: "presences",
   key: string,
-): Promise<PresenceUpdatePayload | undefined>;
+): Promise<PresenceUpdate | undefined>;
 function get(
   table: "unavailableGuilds",
   key: string,
-): Promise<Guild | undefined>;
+): Promise<number | undefined>;
 async function get(table: TableName, key: string) {
   return cache[table].get(key);
 }
 
 function forEach(
   table: "guilds",
-  callback: (value: Guild, key: string, map: Map<string, Guild>) => unknown,
+  callback: (
+    value: GuildStruct,
+    key: string,
+    map: Map<string, GuildStruct>,
+  ) => unknown,
 ): void;
 function forEach(
   table: "unavailableGuilds",
-  callback: (value: Guild, key: string, map: Map<string, Guild>) => unknown,
+  callback: (value: number, key: string, map: Map<string, number>) => unknown,
 ): void;
 function forEach(
   table: "channels",
-  callback: (value: Channel, key: string, map: Map<string, Channel>) => unknown,
+  callback: (
+    value: ChannelStruct,
+    key: string,
+    map: Map<string, ChannelStruct>,
+  ) => unknown,
 ): void;
 function forEach(
   table: "messages",
-  callback: (value: Message, key: string, map: Map<string, Message>) => unknown,
+  callback: (
+    value: MemberStruct,
+    key: string,
+    map: Map<string, MemberStruct>,
+  ) => unknown,
 ): void;
 function forEach(
   table: "members",
-  callback: (value: Member, key: string, map: Map<string, Member>) => unknown,
+  callback: (
+    value: MemberStruct,
+    key: string,
+    map: Map<string, MemberStruct>,
+  ) => unknown,
 ): void;
 function forEach(
   table: TableName,
@@ -154,24 +176,24 @@ function forEach(
 
 function filter(
   table: "guilds",
-  callback: (value: Guild, key: string) => boolean,
-): Promise<Collection<string, Guild>>;
+  callback: (value: GuildStruct, key: string) => boolean,
+): Promise<Collection<string, GuildStruct>>;
 function filter(
   table: "unavailableGuilds",
-  callback: (value: Guild, key: string) => boolean,
-): Promise<Collection<string, Guild>>;
+  callback: (value: number, key: string) => boolean,
+): Promise<Collection<string, number>>;
 function filter(
   table: "channels",
-  callback: (value: Channel, key: string) => boolean,
-): Promise<Collection<string, Channel>>;
+  callback: (value: ChannelStruct, key: string) => boolean,
+): Promise<Collection<string, ChannelStruct>>;
 function filter(
   table: "messages",
-  callback: (value: Message, key: string) => boolean,
-): Promise<Collection<string, Message>>;
+  callback: (value: MessageStruct, key: string) => boolean,
+): Promise<Collection<string, MessageStruct>>;
 function filter(
   table: "members",
-  callback: (value: Member, key: string) => boolean,
-): Promise<Collection<string, Member>>;
+  callback: (value: MemberStruct, key: string) => boolean,
+): Promise<Collection<string, MemberStruct>>;
 async function filter(
   table: TableName,
   callback: (value: any, key: string) => boolean,
diff --git a/src/handlers/commands/APPLICATION_COMMAND_CREATE.ts b/src/handlers/commands/APPLICATION_COMMAND_CREATE.ts
index 7b936b250..592fef829 100644
--- a/src/handlers/commands/APPLICATION_COMMAND_CREATE.ts
+++ b/src/handlers/commands/APPLICATION_COMMAND_CREATE.ts
@@ -1,5 +1,6 @@
 import { eventHandlers } from "../../bot.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
+import { DiscordApplicationCommandCreateUpdateDelete } from "../../types/interactions/application_command_create_update_delete.ts";
 
 export function handleApplicationCommandCreate(
   data: DiscordGatewayPayload,
diff --git a/src/handlers/commands/APPLICATION_COMMAND_DELETE.ts b/src/handlers/commands/APPLICATION_COMMAND_DELETE.ts
index 69b3f144d..8f73f8ef5 100644
--- a/src/handlers/commands/APPLICATION_COMMAND_DELETE.ts
+++ b/src/handlers/commands/APPLICATION_COMMAND_DELETE.ts
@@ -1,5 +1,6 @@
 import { eventHandlers } from "../../bot.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
+import { DiscordApplicationCommandCreateUpdateDelete } from "../../types/interactions/application_command_create_update_delete.ts";
 
 export function handleApplicationCommandDelete(data: DiscordGatewayPayload) {
   const {
diff --git a/src/handlers/commands/APPLICATION_COMMAND_UPDATE.ts b/src/handlers/commands/APPLICATION_COMMAND_UPDATE.ts
index 8e5328d33..2c450a496 100644
--- a/src/handlers/commands/APPLICATION_COMMAND_UPDATE.ts
+++ b/src/handlers/commands/APPLICATION_COMMAND_UPDATE.ts
@@ -1,5 +1,6 @@
 import { eventHandlers } from "../../bot.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
+import { DiscordApplicationCommandCreateUpdateDelete } from "../../types/interactions/application_command_create_update_delete.ts";
 
 export function handleApplicationCommandUpdate(data: DiscordGatewayPayload) {
   const {
diff --git a/src/handlers/guilds/GUILD_BAN_ADD.ts b/src/handlers/guilds/GUILD_BAN_ADD.ts
index 7fa687f12..26df8e004 100644
--- a/src/handlers/guilds/GUILD_BAN_ADD.ts
+++ b/src/handlers/guilds/GUILD_BAN_ADD.ts
@@ -1,6 +1,7 @@
 import { eventHandlers } from "../../bot.ts";
 import { cacheHandlers } from "../../cache.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
+import { DiscordGuildBanAddRemove } from "../../types/guilds/guild_ban_add_remove.ts";
 
 export async function handleGuildBanAdd(data: DiscordGatewayPayload) {
   const payload = data.d as DiscordGuildBanAddRemove;
diff --git a/src/handlers/guilds/GUILD_BAN_REMOVE.ts b/src/handlers/guilds/GUILD_BAN_REMOVE.ts
index 14022ede5..61301ce4c 100644
--- a/src/handlers/guilds/GUILD_BAN_REMOVE.ts
+++ b/src/handlers/guilds/GUILD_BAN_REMOVE.ts
@@ -1,6 +1,7 @@
 import { eventHandlers } from "../../bot.ts";
 import { cacheHandlers } from "../../cache.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
+import { DiscordGuildBanAddRemove } from "../../types/guilds/guild_ban_add_remove.ts";
 
 export async function handleGuildBanRemove(data: DiscordGatewayPayload) {
   const payload = data.d as DiscordGuildBanAddRemove;
diff --git a/src/handlers/guilds/GUILD_UPDATE.ts b/src/handlers/guilds/GUILD_UPDATE.ts
index cb92b88af..11898a945 100644
--- a/src/handlers/guilds/GUILD_UPDATE.ts
+++ b/src/handlers/guilds/GUILD_UPDATE.ts
@@ -1,18 +1,19 @@
 import { eventHandlers } from "../../bot.ts";
 import { cacheHandlers } from "../../cache.ts";
+import { GuildUpdateChange } from "../../types/discordeno/guild_update_change.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
 import { DiscordGuild } from "../../types/guilds/guild.ts";
 
 export async function handleGuildUpdate(data: DiscordGatewayPayload) {
   const payload = data.d as DiscordGuild;
-  const cachedGuild = await cacheHandlers.get("guilds", payload.id);
-  if (!cachedGuild) return;
+  const newGuild = await cacheHandlers.get("guilds", payload.id);
+  if (!newGuild) return;
 
   const keysToSkip = [
     "roles",
-    "guild_hashes",
-    "guild_id",
-    "max_members",
+    "guildHashes",
+    "guildId",
+    "maxMembers",
     "emojis",
   ];
 
@@ -21,7 +22,7 @@ export async function handleGuildUpdate(data: DiscordGatewayPayload) {
       if (keysToSkip.includes(key)) return;
 
       // @ts-ignore index signature
-      const cachedValue = cachedGuild[key];
+      const cachedValue = newGuild[key];
       if (cachedValue !== value) {
         // Guild create sends undefined and update sends false.
         if (!cachedValue && !value) return;
@@ -34,12 +35,12 @@ export async function handleGuildUpdate(data: DiscordGatewayPayload) {
         }
 
         // @ts-ignore index signature
-        cachedGuild[key] = value;
+        newGuild[key] = value;
         return { key, oldValue: cachedValue, value };
       }
     }).filter((change) => change) as GuildUpdateChange[];
 
-  await cacheHandlers.set("guilds", payload.id, cachedGuild);
+  await cacheHandlers.set("guilds", payload.id, newGuild);
 
-  eventHandlers.guildUpdate?.(cachedGuild, changes);
+  eventHandlers.guildUpdate?.(newGuild, changes);
 }
diff --git a/src/handlers/integrations/INTEGRATION_CREATE.ts b/src/handlers/integrations/INTEGRATION_CREATE.ts
index 4148db518..255df04c1 100644
--- a/src/handlers/integrations/INTEGRATION_CREATE.ts
+++ b/src/handlers/integrations/INTEGRATION_CREATE.ts
@@ -1,28 +1,17 @@
 import { eventHandlers } from "../../bot.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
+import {
+  DiscordIntegrationCreateUpdate,
+  IntegrationCreateUpdate,
+} from "../../types/integration/integration_create_update.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
 export function handleIntegrationCreate(
   data: DiscordGatewayPayload,
 ) {
-  const {
-    guild_id: guildId,
-    enable_emoticons: enableEmoticons,
-    expire_behavior: expireBehavior,
-    expire_grace_period: expireGracePeriod,
-    subscriber_count: subscriberCount,
-    role_id: roleId,
-    synced_at: syncedAt,
-    ...rest
-  } = data.d as IntegrationCreateUpdateEvent;
+  const payload = data.d as DiscordIntegrationCreateUpdate;
 
-  eventHandlers.integrationCreate?.({
-    ...rest,
-    guildId,
-    enableEmoticons,
-    expireBehavior,
-    expireGracePeriod,
-    syncedAt,
-    subscriberCount,
-    roleId,
-  });
+  eventHandlers.integrationCreate?.(
+    snakeKeysToCamelCase(payload) as IntegrationCreateUpdate,
+  );
 }
diff --git a/src/handlers/integrations/INTEGRATION_DELETE.ts b/src/handlers/integrations/INTEGRATION_DELETE.ts
index c89ae3d3b..af1ed9d15 100644
--- a/src/handlers/integrations/INTEGRATION_DELETE.ts
+++ b/src/handlers/integrations/INTEGRATION_DELETE.ts
@@ -1,16 +1,15 @@
 import { eventHandlers } from "../../bot.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
+import {
+  DiscordIntegrationDelete,
+  IntegrationDelete,
+} from "../../types/integration/integration_delete.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
 export function handleIntegrationDelete(data: DiscordGatewayPayload) {
-  const {
-    guild_id: guildId,
-    application_id: applicationId,
-    ...rest
-  } = data.d as IntegrationDeleteEvent;
+  const payload = data.d as DiscordIntegrationDelete;
 
-  eventHandlers.integrationDelete?.({
-    ...rest,
-    applicationId,
-    guildId,
-  });
+  eventHandlers.integrationDelete?.(
+    snakeKeysToCamelCase(payload) as IntegrationDelete,
+  );
 }
diff --git a/src/handlers/integrations/INTEGRATION_UPDATE.ts b/src/handlers/integrations/INTEGRATION_UPDATE.ts
index 13fb98bed..db56de2cd 100644
--- a/src/handlers/integrations/INTEGRATION_UPDATE.ts
+++ b/src/handlers/integrations/INTEGRATION_UPDATE.ts
@@ -1,26 +1,15 @@
 import { eventHandlers } from "../../bot.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
+import {
+  DiscordIntegrationCreateUpdate,
+  IntegrationCreateUpdate,
+} from "../../types/integration/integration_create_update.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
 export function handleIntegrationUpdate(data: DiscordGatewayPayload) {
-  const {
-    enable_emoticons: enableEmoticons,
-    expire_behavior: expireBehavior,
-    expire_grace_period: expireGracePeriod,
-    role_id: roleId,
-    subscriber_count: subscriberCount,
-    synced_at: syncedAt,
-    guild_id: guildId,
-    ...rest
-  } = data.d as IntegrationCreateUpdateEvent;
+  const payload = data.d as DiscordIntegrationCreateUpdate;
 
-  eventHandlers.integrationUpdate?.({
-    ...rest,
-    guildId,
-    subscriberCount,
-    enableEmoticons,
-    expireGracePeriod,
-    roleId,
-    expireBehavior,
-    syncedAt,
-  });
+  eventHandlers.integrationUpdate?.(
+    snakeKeysToCamelCase(payload) as IntegrationCreateUpdate,
+  );
 }
diff --git a/src/handlers/invites/INVITE_CREATE.ts b/src/handlers/invites/INVITE_CREATE.ts
index f53f0b102..c21e87e3b 100644
--- a/src/handlers/invites/INVITE_CREATE.ts
+++ b/src/handlers/invites/INVITE_CREATE.ts
@@ -1,28 +1,13 @@
 import { eventHandlers } from "../../bot.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
-import { DiscordInviteCreate } from "../../types/invites/invite_create.ts";
+import {
+  DiscordInviteCreate,
+  InviteCreate,
+} from "../../types/invites/invite_create.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
-export function handleInviteCreate(payload: DiscordGatewayPayload) {
-  // TODO: replace with tocamelcase
-  const {
-    channel_id: channelId,
-    created_at: createdAt,
-    max_age: maxAge,
-    guild_id: guildId,
-    target_user: targetUser,
-    target_user_type: targetUserType,
-    max_uses: maxUses,
-    ...rest
-  } = payload.d as DiscordInviteCreate;
+export function handleInviteCreate(data: DiscordGatewayPayload) {
+  const payload = data.d as DiscordInviteCreate;
 
-  eventHandlers.inviteCreate?.({
-    ...rest,
-    channelId,
-    guildId,
-    maxAge,
-    targetUser,
-    targetUserType,
-    maxUses,
-    createdAt,
-  });
+  eventHandlers.inviteCreate?.(snakeKeysToCamelCase(payload) as InviteCreate);
 }
diff --git a/src/handlers/invites/INVITE_DELETE.ts b/src/handlers/invites/INVITE_DELETE.ts
index cddae5a27..3704ed7f0 100644
--- a/src/handlers/invites/INVITE_DELETE.ts
+++ b/src/handlers/invites/INVITE_DELETE.ts
@@ -1,17 +1,13 @@
 import { eventHandlers } from "../../bot.ts";
-import { DiscordInviteDelete } from "../../types/invites/invite_delete.ts";
 import { DiscordGatewayPayload } from "../../types/gateway/gateway_payload.ts";
+import {
+  DiscordInviteDelete,
+  InviteDelete,
+} from "../../types/invites/invite_delete.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
-export function handleInviteDelete(payload: DiscordGatewayPayload) {
-  const {
-    channel_id: channelId,
-    guild_id: guildId,
-    ...rest
-  } = payload.d as DiscordInviteDelete;
+export function handleInviteDelete(data: DiscordGatewayPayload) {
+  const payload = data.d as DiscordInviteDelete;
 
-  eventHandlers.inviteDelete?.({
-    ...rest,
-    channelId,
-    guildId,
-  });
+  eventHandlers.inviteDelete?.(snakeKeysToCamelCase(payload) as InviteDelete);
 }
diff --git a/src/helpers/channels/delete_channel.ts b/src/helpers/channels/delete_channel.ts
index 764c73844..cd384bbfa 100644
--- a/src/helpers/channels/delete_channel.ts
+++ b/src/helpers/channels/delete_channel.ts
@@ -9,7 +9,7 @@ export async function deleteChannel(
   guildId: string,
   channelId: string,
   reason?: string,
-) {
+): Promise<undefined> {
   await requireBotGuildPermissions(guildId, ["MANAGE_CHANNELS"]);
 
   const guild = await cacheHandlers.get("guilds", guildId);
diff --git a/src/helpers/channels/delete_channel_overwrite.ts b/src/helpers/channels/delete_channel_overwrite.ts
index 3b39301e7..da9f04a4f 100644
--- a/src/helpers/channels/delete_channel_overwrite.ts
+++ b/src/helpers/channels/delete_channel_overwrite.ts
@@ -7,7 +7,7 @@ export async function deleteChannelOverwrite(
   guildId: string,
   channelId: string,
   overwriteId: string,
-) {
+): Promise<undefined> {
   await requireBotGuildPermissions(guildId, ["MANAGE_ROLES"]);
 
   const result = await rest.runMethod(
diff --git a/src/helpers/channels/edit_channel.ts b/src/helpers/channels/edit_channel.ts
index b6a7eb6a6..cd0ce83b1 100644
--- a/src/helpers/channels/edit_channel.ts
+++ b/src/helpers/channels/edit_channel.ts
@@ -1,4 +1,5 @@
 import { rest } from "../../rest/rest.ts";
+import { ModifyChannel } from "../../types/channels/modify_channel.ts";
 import { endpoints } from "../../util/constants.ts";
 import {
   calculateBits,
@@ -8,7 +9,7 @@ import {
 /** Update a channel's settings. Requires the `MANAGE_CHANNELS` permission for the guild. */
 export async function editChannel(
   channelId: string,
-  options: ChannelEditOptions,
+  options: ModifyChannel,
   reason?: string,
 ) {
   await requireBotChannelPermissions(channelId, ["MANAGE_CHANNELS"]);
@@ -47,7 +48,7 @@ export async function editChannel(
     // deno-lint-ignore camelcase
     user_limit: options.userLimit,
     // deno-lint-ignore camelcase
-    permission_overwrites: options.overwrites?.map((overwrite) => {
+    permission_overwrites: options.permissionOverwrites?.map((overwrite) => {
       return {
         ...overwrite,
         allow: calculateBits(overwrite.allow),
diff --git a/src/helpers/channels/edit_channel_overwrite.ts b/src/helpers/channels/edit_channel_overwrite.ts
index 451dd6f08..e6caad9b0 100644
--- a/src/helpers/channels/edit_channel_overwrite.ts
+++ b/src/helpers/channels/edit_channel_overwrite.ts
@@ -12,7 +12,7 @@ export async function editChannelOverwrite(
   channelId: string,
   overwriteId: string,
   options: Omit<Overwrite, "id">,
-) {
+): Promise<undefined> {
   await requireBotGuildPermissions(guildId, ["MANAGE_ROLES"]);
 
   const result = await rest.runMethod(
diff --git a/src/helpers/channels/start_typing.ts b/src/helpers/channels/start_typing.ts
index ca181dcbe..c5cf0144b 100644
--- a/src/helpers/channels/start_typing.ts
+++ b/src/helpers/channels/start_typing.ts
@@ -10,7 +10,7 @@ import { botHasChannelPermissions } from "../../util/permissions.ts";
  * However, if a bot is responding to a command and expects the computation to take a few seconds,
  * this endpoint may be called to let the user know that the bot is processing their message.
  */
-export async function startTyping(channelId: string) {
+export async function startTyping(channelId: string): Promise<undefined> {
   const channel = await cacheHandlers.get("channels", channelId);
   // If the channel is cached, we can do extra checks/safety
   if (channel) {
diff --git a/src/helpers/channels/swap_channels.ts b/src/helpers/channels/swap_channels.ts
index 8b3662278..9c6801c36 100644
--- a/src/helpers/channels/swap_channels.ts
+++ b/src/helpers/channels/swap_channels.ts
@@ -6,7 +6,7 @@ import { endpoints } from "../../util/constants.ts";
 export async function swapChannels(
   guildId: string,
   channelPositions: ModifyGuildChannelPositions[],
-) {
+): Promise<undefined> {
   if (channelPositions.length < 2) {
     throw "You must provide at least two channels to be swapped.";
   }
diff --git a/src/helpers/commands/create_slash_command.ts b/src/helpers/commands/create_slash_command.ts
index fafa506fb..8baa84490 100644
--- a/src/helpers/commands/create_slash_command.ts
+++ b/src/helpers/commands/create_slash_command.ts
@@ -1,7 +1,11 @@
 import { applicationId } from "../../bot.ts";
 import { rest } from "../../rest/rest.ts";
+import { CreateGlobalApplicationCommand } from "../../types/interactions/create_global_application_command.ts";
 import { endpoints } from "../../util/constants.ts";
-import { validateSlashCommands } from "../../util/utils.ts";
+import {
+  camelKeysToSnakeCase,
+  validateSlashCommands,
+} from "../../util/utils.ts";
 
 /**
  * There are two kinds of Slash Commands: global commands and guild commands. Global commands are available for every guild that adds your app; guild commands are specific to the guild you specify when making them. Command names are unique per application within each scope (global and guild). That means:
@@ -14,17 +18,18 @@ import { validateSlashCommands } from "../../util/utils.ts";
  * Global commands are cached for **1 hour**. That means that new global commands will fan out slowly across all guilds, and will be guaranteed to be updated in an hour.
  * Guild commands update **instantly**. We recommend you use guild commands for quick testing, and global commands when they're ready for public use.
  */
-export async function createSlashCommand(options: CreateSlashCommandOptions) {
+export async function createSlashCommand(
+  options: CreateGlobalApplicationCommand,
+  guildId: string,
+) {
   validateSlashCommands([options], true);
 
   const result = await rest.runMethod(
     "post",
-    options.guildId
-      ? endpoints.COMMANDS_GUILD(applicationId, options.guildId)
+    guildId
+      ? endpoints.COMMANDS_GUILD(applicationId, guildId)
       : endpoints.COMMANDS(applicationId),
-    {
-      ...options,
-    },
+    camelKeysToSnakeCase(options),
   );
 
   return result;
diff --git a/src/helpers/commands/delete_slash_command.ts b/src/helpers/commands/delete_slash_command.ts
index 1eda08083..0b9580e15 100644
--- a/src/helpers/commands/delete_slash_command.ts
+++ b/src/helpers/commands/delete_slash_command.ts
@@ -3,12 +3,16 @@ import { rest } from "../../rest/rest.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /** Deletes a slash command. */
-export function deleteSlashCommand(id: string, guildId?: string) {
-  if (!guildId) {
-    return rest.runMethod("delete", endpoints.COMMANDS_ID(applicationId, id));
-  }
-  return rest.runMethod(
+export async function deleteSlashCommand(
+  id: string,
+  guildId?: string,
+): Promise<undefined> {
+  const result = await rest.runMethod(
     "delete",
-    endpoints.COMMANDS_GUILD_ID(applicationId, guildId, id),
+    guildId
+      ? endpoints.COMMANDS_GUILD_ID(applicationId, guildId, id)
+      : endpoints.COMMANDS_ID(applicationId, id),
   );
+
+  return result;
 }
diff --git a/src/helpers/commands/delete_slash_response.ts b/src/helpers/commands/delete_slash_response.ts
index 1a9d480e0..14523c3a5 100644
--- a/src/helpers/commands/delete_slash_response.ts
+++ b/src/helpers/commands/delete_slash_response.ts
@@ -3,7 +3,10 @@ import { rest } from "../../rest/rest.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /** To delete your response to a slash command. If a message id is not provided, it will default to deleting the original response. */
-export async function deleteSlashResponse(token: string, messageId?: string) {
+export async function deleteSlashResponse(
+  token: string,
+  messageId?: string,
+): Promise<undefined> {
   const result = await rest.runMethod(
     "delete",
     messageId
diff --git a/src/helpers/commands/edit_slash_response.ts b/src/helpers/commands/edit_slash_response.ts
index fa81ac460..f3c49f34d 100644
--- a/src/helpers/commands/edit_slash_response.ts
+++ b/src/helpers/commands/edit_slash_response.ts
@@ -1,13 +1,16 @@
 import { applicationId } from "../../bot.ts";
 import { rest } from "../../rest/rest.ts";
 import { structures } from "../../structures/mod.ts";
+import { DiscordenoEditWebhookMessage } from "../../types/discordeno/edit_webhook_message.ts";
+import { DiscordAllowedMentionsTypes } from "../../types/messages/allowed_mentions_types.ts";
+import { DiscordMessage } from "../../types/messages/message.ts";
 import { Errors } from "../../types/misc/errors.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /** To edit your response to a slash command. If a messageId is not provided it will default to editing the original response. */
 export async function editSlashResponse(
   token: string,
-  options: EditSlashResponseOptions,
+  options: DiscordenoEditWebhookMessage,
 ) {
   if (options.content && options.content.length > 2000) {
     throw Error(Errors.MESSAGE_MAX_LENGTH);
@@ -17,31 +20,39 @@ export async function editSlashResponse(
     options.embeds.splice(10);
   }
 
-  if (options.allowed_mentions) {
-    if (options.allowed_mentions.users?.length) {
-      if (options.allowed_mentions.parse.includes("users")) {
-        options.allowed_mentions.parse = options.allowed_mentions.parse.filter(
+  if (options.allowedMentions) {
+    if (options.allowedMentions.users?.length) {
+      if (
+        options.allowedMentions.parse.includes(
+          DiscordAllowedMentionsTypes.UserMentions,
+        )
+      ) {
+        options.allowedMentions.parse = options.allowedMentions.parse.filter(
           (p) => p !== "users",
         );
       }
 
-      if (options.allowed_mentions.users.length > 100) {
-        options.allowed_mentions.users = options.allowed_mentions.users.slice(
+      if (options.allowedMentions.users.length > 100) {
+        options.allowedMentions.users = options.allowedMentions.users.slice(
           0,
           100,
         );
       }
     }
 
-    if (options.allowed_mentions.roles?.length) {
-      if (options.allowed_mentions.parse.includes("roles")) {
-        options.allowed_mentions.parse = options.allowed_mentions.parse.filter(
+    if (options.allowedMentions.roles?.length) {
+      if (
+        options.allowedMentions.parse.includes(
+          DiscordAllowedMentionsTypes.RoleMentions,
+        )
+      ) {
+        options.allowedMentions.parse = options.allowedMentions.parse.filter(
           (p) => p !== "roles",
         );
       }
 
-      if (options.allowed_mentions.roles.length > 100) {
-        options.allowed_mentions.roles = options.allowed_mentions.roles.slice(
+      if (options.allowedMentions.roles.length > 100) {
+        options.allowedMentions.roles = options.allowedMentions.roles.slice(
           0,
           100,
         );
@@ -61,7 +72,7 @@ export async function editSlashResponse(
   if (!options.messageId) return result;
 
   const message = await structures.createMessageStruct(
-    result as MessageCreateOptions,
+    result as DiscordMessage,
   );
   return message;
 }
diff --git a/src/helpers/commands/get_slash_command.ts b/src/helpers/commands/get_slash_command.ts
index 3cc50bc28..72c61b3f6 100644
--- a/src/helpers/commands/get_slash_command.ts
+++ b/src/helpers/commands/get_slash_command.ts
@@ -1,5 +1,6 @@
 import { applicationId } from "../../bot.ts";
 import { rest } from "../../rest/rest.ts";
+import { ApplicationCommand } from "../../types/interactions/application_command.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /** Fetchs the global command for the given Id. If a guildId is provided, the guild command will be fetched. */
@@ -11,5 +12,5 @@ export async function getSlashCommand(commandId: string, guildId?: string) {
       : endpoints.COMMANDS_ID(applicationId, commandId),
   );
 
-  return result as SlashCommand;
+  return result as ApplicationCommand;
 }
diff --git a/src/helpers/commands/get_slash_commands.ts b/src/helpers/commands/get_slash_commands.ts
index ce2cc50bf..3337baf49 100644
--- a/src/helpers/commands/get_slash_commands.ts
+++ b/src/helpers/commands/get_slash_commands.ts
@@ -1,5 +1,6 @@
 import { applicationId } from "../../bot.ts";
 import { rest } from "../../rest/rest.ts";
+import { ApplicationCommand } from "../../types/interactions/application_command.ts";
 import { Collection } from "../../util/collection.ts";
 import { endpoints } from "../../util/constants.ts";
 
@@ -10,7 +11,7 @@ export async function getSlashCommands(guildId?: string) {
     guildId
       ? endpoints.COMMANDS_GUILD(applicationId, guildId)
       : endpoints.COMMANDS(applicationId),
-  )) as SlashCommand[];
+  )) as ApplicationCommand[];
 
   return new Collection(result.map((command) => [command.name, command]));
 }
diff --git a/src/helpers/commands/send_interaction_response.ts b/src/helpers/commands/send_interaction_response.ts
index c60ea83ef..6d9fb0022 100644
--- a/src/helpers/commands/send_interaction_response.ts
+++ b/src/helpers/commands/send_interaction_response.ts
@@ -1,6 +1,7 @@
 import { applicationId } from "../../bot.ts";
 import { cache } from "../../cache.ts";
 import { rest } from "../../rest/rest.ts";
+import { DiscordenoInteractionResponse } from "../../types/discordeno/interaction_response.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /**
@@ -12,7 +13,7 @@ import { endpoints } from "../../util/constants.ts";
 export async function sendInteractionResponse(
   id: string,
   token: string,
-  options: SlashCommandResponseOptions,
+  options: DiscordenoInteractionResponse,
 ) {
   // If its already been executed, we need to send a followup response
   if (cache.executedSlashCommands.has(token)) {
@@ -30,12 +31,12 @@ export async function sendInteractionResponse(
 
   // If the user wants this as a private message mark it ephemeral
   if (options.private) {
-    options.data.flags = 64;
+    options.data = { ...options.data, flags: 64 };
   }
 
   // If no mentions are provided, force disable mentions
-  if (!options.data.allowed_mentions) {
-    options.data.allowed_mentions = { parse: [] };
+  if (!options.data?.allowedMentions) {
+    options.data = { ...options.data, allowedMentions: { parse: [] } };
   }
 
   const result = await rest.runMethod(
diff --git a/src/helpers/commands/upsert_slash_command.ts b/src/helpers/commands/upsert_slash_command.ts
index 21091f18e..66c064780 100644
--- a/src/helpers/commands/upsert_slash_command.ts
+++ b/src/helpers/commands/upsert_slash_command.ts
@@ -1,5 +1,6 @@
 import { applicationId } from "../../bot.ts";
 import { rest } from "../../rest/rest.ts";
+import { EditGlobalApplicationCommand } from "../../types/interactions/edit_global_application_command.ts";
 import { endpoints } from "../../util/constants.ts";
 import { validateSlashCommands } from "../../util/utils.ts";
 
@@ -8,7 +9,7 @@ import { validateSlashCommands } from "../../util/utils.ts";
  */
 export async function upsertSlashCommand(
   commandId: string,
-  options: UpsertSlashCommandOptions,
+  options: EditGlobalApplicationCommand,
   guildId?: string,
 ) {
   validateSlashCommands([options]);
diff --git a/src/helpers/commands/upsert_slash_commands.ts b/src/helpers/commands/upsert_slash_commands.ts
index a5befc957..ce0bdeee2 100644
--- a/src/helpers/commands/upsert_slash_commands.ts
+++ b/src/helpers/commands/upsert_slash_commands.ts
@@ -1,5 +1,6 @@
 import { applicationId } from "../../bot.ts";
 import { rest } from "../../rest/rest.ts";
+import { EditGlobalApplicationCommand } from "../../types/interactions/edit_global_application_command.ts";
 import { endpoints } from "../../util/constants.ts";
 import { validateSlashCommands } from "../../util/utils.ts";
 
@@ -9,7 +10,7 @@ import { validateSlashCommands } from "../../util/utils.ts";
  * **NOTE:** Any slash commands that are not specified in this function will be **deleted**. If you don't provide the commandId and rename your command, the command gets a new Id.
  */
 export async function upsertSlashCommands(
-  options: UpsertSlashCommandsOptions[],
+  options: EditGlobalApplicationCommand[],
   guildId?: string,
 ) {
   validateSlashCommands(options);
diff --git a/src/helpers/emojis/create_emoji.ts b/src/helpers/emojis/create_emoji.ts
index 1070bf7a9..4b2cdff67 100644
--- a/src/helpers/emojis/create_emoji.ts
+++ b/src/helpers/emojis/create_emoji.ts
@@ -1,14 +1,16 @@
 import { rest } from "../../rest/rest.ts";
+import { CreateGuildEmoji } from "../../types/emojis/create_guild_emoji.ts";
+import { Emoji } from "../../types/emojis/emoji.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotGuildPermissions } from "../../util/permissions.ts";
-import { urlToBase64 } from "../../util/utils.ts";
+import { snakeKeysToCamelCase, urlToBase64 } from "../../util/utils.ts";
 
 /** Create an emoji in the server. Emojis and animated emojis have a maximum file size of 256kb. Attempting to upload an emoji larger than this limit will fail and return 400 Bad Request and an error message, but not a JSON status code. If a URL is provided to the image parameter, Discordeno will automatically convert it to a base64 string internally. */
 export async function createEmoji(
   guildId: string,
   name: string,
   image: string,
-  options: CreateEmojisOptions,
+  options: CreateGuildEmoji,
 ) {
   await requireBotGuildPermissions(guildId, ["MANAGE_EMOJIS"]);
 
@@ -22,5 +24,5 @@ export async function createEmoji(
     image,
   });
 
-  return result;
+  return snakeKeysToCamelCase(result) as Emoji;
 }
diff --git a/src/helpers/emojis/delete_emoji.ts b/src/helpers/emojis/delete_emoji.ts
index 64154ccfe..97783b41c 100644
--- a/src/helpers/emojis/delete_emoji.ts
+++ b/src/helpers/emojis/delete_emoji.ts
@@ -7,7 +7,7 @@ export async function deleteEmoji(
   guildId: string,
   id: string,
   reason?: string,
-) {
+): Promise<undefined> {
   await requireBotGuildPermissions(guildId, ["MANAGE_EMOJIS"]);
 
   const result = await rest.runMethod(
diff --git a/src/helpers/emojis/edit_emoji.ts b/src/helpers/emojis/edit_emoji.ts
index 0c2e125a6..803dc8ea5 100644
--- a/src/helpers/emojis/edit_emoji.ts
+++ b/src/helpers/emojis/edit_emoji.ts
@@ -1,4 +1,5 @@
 import { rest } from "../../rest/rest.ts";
+import { ModifyGuildEmoji } from "../../types/emojis/modify_guild_emoji.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotGuildPermissions } from "../../util/permissions.ts";
 
@@ -6,7 +7,7 @@ import { requireBotGuildPermissions } from "../../util/permissions.ts";
 export async function editEmoji(
   guildId: string,
   id: string,
-  options: EditEmojisOptions,
+  options: ModifyGuildEmoji,
 ) {
   await requireBotGuildPermissions(guildId, ["MANAGE_EMOJIS"]);
 
diff --git a/src/helpers/emojis/get_emoji.ts b/src/helpers/emojis/get_emoji.ts
index edf3f4c25..c99baa1d0 100644
--- a/src/helpers/emojis/get_emoji.ts
+++ b/src/helpers/emojis/get_emoji.ts
@@ -1,5 +1,6 @@
 import { cacheHandlers } from "../../cache.ts";
 import { rest } from "../../rest/rest.ts";
+import { Emoji } from "../../types/emojis/emoji.ts";
 import { Errors } from "../../types/misc/errors.ts";
 import { endpoints } from "../../util/constants.ts";
 
@@ -21,7 +22,7 @@ export async function getEmoji(
   if (addToCache) {
     const guild = await cacheHandlers.get("guilds", guildId);
     if (!guild) throw new Error(Errors.GUILD_NOT_FOUND);
-    guild.emojis.set(result.id ?? result.name, result);
+    guild.emojis.set(emojiId, result);
     cacheHandlers.set(
       "guilds",
       guildId,
diff --git a/src/helpers/emojis/get_emojis.ts b/src/helpers/emojis/get_emojis.ts
index 133723114..6678c2b81 100644
--- a/src/helpers/emojis/get_emojis.ts
+++ b/src/helpers/emojis/get_emojis.ts
@@ -1,5 +1,6 @@
 import { cacheHandlers } from "../../cache.ts";
 import { rest } from "../../rest/rest.ts";
+import { Emoji } from "../../types/emojis/emoji.ts";
 import { Errors } from "../../types/misc/errors.ts";
 import { endpoints } from "../../util/constants.ts";
 
@@ -16,7 +17,7 @@ export async function getEmojis(guildId: string, addToCache = true) {
     const guild = await cacheHandlers.get("guilds", guildId);
     if (!guild) throw new Error(Errors.GUILD_NOT_FOUND);
 
-    result.forEach((emoji) => guild.emojis.set(emoji.id ?? emoji.name, emoji));
+    result.forEach((emoji) => guild.emojis.set(emoji.id!, emoji));
 
     cacheHandlers.set("guilds", guildId, guild);
   }
diff --git a/src/helpers/guilds/create_guild.ts b/src/helpers/guilds/create_guild.ts
index 144d260a4..cb58b92ac 100644
--- a/src/helpers/guilds/create_guild.ts
+++ b/src/helpers/guilds/create_guild.ts
@@ -1,14 +1,16 @@
 import { rest } from "../../rest/rest.ts";
 import { structures } from "../../structures/mod.ts";
+import { CreateGuild } from "../../types/guilds/create_guild.ts";
+import { DiscordGuild } from "../../types/guilds/guild.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /** Create a new guild. Returns a guild object on success. Fires a Guild Create Gateway event. This endpoint can be used only by bots in less than 10 guilds. */
-export async function createGuild(options: CreateServerOptions) {
+export async function createGuild(options: CreateGuild) {
   const guild = (await rest.runMethod(
     "post",
     endpoints.GUILDS,
     options,
-  )) as CreateGuildPayload;
+  )) as DiscordGuild;
 
   return structures.createGuildStruct(guild, 0);
 }
diff --git a/src/helpers/guilds/delete_server.ts b/src/helpers/guilds/delete_server.ts
index 03da1f717..43a1085eb 100644
--- a/src/helpers/guilds/delete_server.ts
+++ b/src/helpers/guilds/delete_server.ts
@@ -3,7 +3,7 @@ import { endpoints } from "../../util/constants.ts";
 
 /** Delete a guild permanently. User must be owner. Returns 204 No Content on success. Fires a Guild Delete Gateway event.
  */
-export async function deleteServer(guildId: string) {
+export async function deleteServer(guildId: string): Promise<undefined> {
   const result = await rest.runMethod("delete", endpoints.GUILDS_BASE(guildId));
 
   return result;
diff --git a/src/helpers/guilds/edit_guild.ts b/src/helpers/guilds/edit_guild.ts
index 081b7a64b..a45217594 100644
--- a/src/helpers/guilds/edit_guild.ts
+++ b/src/helpers/guilds/edit_guild.ts
@@ -1,10 +1,13 @@
 import { rest } from "../../rest/rest.ts";
+import { structures } from "../../structures/mod.ts";
+import { DiscordGuild } from "../../types/guilds/guild.ts";
+import { ModifyGuild } from "../../types/guilds/modify_guild.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotGuildPermissions } from "../../util/permissions.ts";
 import { urlToBase64 } from "../../util/utils.ts";
 
 /** Modify a guilds settings. Requires the MANAGE_GUILD permission. */
-export async function editGuild(guildId: string, options: GuildEditOptions) {
+export async function editGuild(guildId: string, options: ModifyGuild) {
   await requireBotGuildPermissions(guildId, ["MANAGE_GUILD"]);
 
   if (options.icon && !options.icon.startsWith("data:image/")) {
@@ -23,7 +26,7 @@ export async function editGuild(guildId: string, options: GuildEditOptions) {
     "patch",
     endpoints.GUILDS_BASE(guildId),
     options,
-  );
+  ) as DiscordGuild;
 
-  return result;
+  return structures.createGuildStruct(result, -1);
 }
diff --git a/src/helpers/guilds/edit_widget.ts b/src/helpers/guilds/edit_widget.ts
index f36511cc7..42eaefd1b 100644
--- a/src/helpers/guilds/edit_widget.ts
+++ b/src/helpers/guilds/edit_widget.ts
@@ -1,6 +1,8 @@
 import { rest } from "../../rest/rest.ts";
+import { GuildWidget } from "../../types/guilds/guild_widget.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotGuildPermissions } from "../../util/permissions.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
 /** Modify a guild widget object for the guild. Requires the MANAGE_GUILD permission. */
 export async function editWidget(
@@ -19,5 +21,5 @@ export async function editWidget(
     },
   );
 
-  return result;
+  return snakeKeysToCamelCase(result) as GuildWidget;
 }
diff --git a/src/helpers/guilds/get_audit_logs.ts b/src/helpers/guilds/get_audit_logs.ts
index 63ee31d2f..241c21ff4 100644
--- a/src/helpers/guilds/get_audit_logs.ts
+++ b/src/helpers/guilds/get_audit_logs.ts
@@ -1,27 +1,30 @@
 import { rest } from "../../rest/rest.ts";
+import { AuditLog } from "../../types/audit_log/audit_log.ts";
+import { GetGuildAuditLog } from "../../types/audit_log/get_guild_audit_log.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotGuildPermissions } from "../../util/permissions.ts";
+import {
+  camelKeysToSnakeCase,
+  snakeKeysToCamelCase,
+} from "../../util/utils.ts";
 
 /** Returns the audit logs for the guild. Requires VIEW AUDIT LOGS permission */
 export async function getAuditLogs(
   guildId: string,
-  options: GetAuditLogsOptions,
+  options: GetGuildAuditLog,
 ) {
   await requireBotGuildPermissions(guildId, ["VIEW_AUDIT_LOG"]);
 
   const result = await rest.runMethod(
     "get",
     endpoints.GUILD_AUDIT_LOGS(guildId),
-    {
+    camelKeysToSnakeCase({
       ...options,
-      action_type: options.action_type
-        ? AuditLogs[options.action_type]
-        : undefined,
       limit: options.limit && options.limit >= 1 && options.limit <= 100
         ? options.limit
         : 50,
-    },
+    }),
   );
 
-  return result;
+  return snakeKeysToCamelCase(result) as AuditLog;
 }
diff --git a/src/helpers/guilds/get_available_voice_regions.ts b/src/helpers/guilds/get_available_voice_regions.ts
index b1f2b0c67..944973477 100644
--- a/src/helpers/guilds/get_available_voice_regions.ts
+++ b/src/helpers/guilds/get_available_voice_regions.ts
@@ -1,9 +1,10 @@
 import { rest } from "../../rest/rest.ts";
+import { VoiceRegion } from "../../types/voice/voice_region.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /** Returns an array of voice regions that can be used when creating servers. */
 export async function getAvailableVoiceRegions() {
   const result = await rest.runMethod("get", endpoints.VOICE_REGIONS);
 
-  return result;
+  return result as VoiceRegion;
 }
diff --git a/src/helpers/guilds/get_ban.ts b/src/helpers/guilds/get_ban.ts
index 8d3751965..1cac4ac1d 100644
--- a/src/helpers/guilds/get_ban.ts
+++ b/src/helpers/guilds/get_ban.ts
@@ -1,6 +1,8 @@
 import { rest } from "../../rest/rest.ts";
+import { Ban } from "../../types/guilds/ban.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotGuildPermissions } from "../../util/permissions.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
 /** Returns a ban object for the given user or a 404 not found if the ban cannot be found. Requires the BAN_MEMBERS permission. */
 export async function getBan(guildId: string, memberId: string) {
@@ -11,5 +13,5 @@ export async function getBan(guildId: string, memberId: string) {
     endpoints.GUILD_BAN(guildId, memberId),
   );
 
-  return result as BannedUser;
+  return snakeKeysToCamelCase(result) as Ban;
 }
diff --git a/src/helpers/guilds/get_bans.ts b/src/helpers/guilds/get_bans.ts
index c32820525..c55e27e5d 100644
--- a/src/helpers/guilds/get_bans.ts
+++ b/src/helpers/guilds/get_bans.ts
@@ -1,7 +1,9 @@
 import { rest } from "../../rest/rest.ts";
+import { Ban, DiscordBan } from "../../types/guilds/ban.ts";
 import { Collection } from "../../util/collection.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotGuildPermissions } from "../../util/permissions.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
 /** Returns a list of ban objects for the users banned from this guild. Requires the BAN_MEMBERS permission. */
 export async function getBans(guildId: string) {
@@ -10,9 +12,9 @@ export async function getBans(guildId: string) {
   const results = (await rest.runMethod(
     "get",
     endpoints.GUILD_BANS(guildId),
-  )) as BannedUser[];
+  )) as DiscordBan[];
 
-  return new Collection<string, BannedUser>(
-    results.map((res) => [res.user.id, res]),
+  return new Collection<string, Ban>(
+    results.map((res) => [res.user.id, snakeKeysToCamelCase(res) as Ban]),
   );
 }
diff --git a/src/helpers/guilds/get_guild.ts b/src/helpers/guilds/get_guild.ts
index 0a46b7d5b..b0b39700b 100644
--- a/src/helpers/guilds/get_guild.ts
+++ b/src/helpers/guilds/get_guild.ts
@@ -1,5 +1,7 @@
 import { rest } from "../../rest/rest.ts";
+import { Guild } from "../../types/guilds/guild.ts";
 import { endpoints } from "../../util/constants.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
 /**
  * ⚠️ **If you need this, you are probably doing something wrong. Always use cache.guilds.get()
@@ -13,5 +15,5 @@ export async function getGuild(guildId: string, counts = true) {
     with_counts: counts,
   });
 
-  return result as UpdateGuildPayload;
+  return snakeKeysToCamelCase(result) as Guild;
 }
diff --git a/src/helpers/guilds/get_guild_preview.ts b/src/helpers/guilds/get_guild_preview.ts
index 6d7cc9386..dfd398273 100644
--- a/src/helpers/guilds/get_guild_preview.ts
+++ b/src/helpers/guilds/get_guild_preview.ts
@@ -1,9 +1,11 @@
 import { rest } from "../../rest/rest.ts";
+import { GuildPreview } from "../../types/guilds/guild_preview.ts";
 import { endpoints } from "../../util/constants.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
 /** Returns the guild preview object for the given id. If the bot is not in the guild, then the guild must be Discoverable. */
 export async function getGuildPreview(guildId: string) {
   const result = await rest.runMethod("get", endpoints.GUILD_PREVIEW(guildId));
 
-  return result;
+  return snakeKeysToCamelCase(result) as GuildPreview;
 }
diff --git a/src/helpers/guilds/get_prune_count.ts b/src/helpers/guilds/get_prune_count.ts
index 1d81987ba..12b35b418 100644
--- a/src/helpers/guilds/get_prune_count.ts
+++ b/src/helpers/guilds/get_prune_count.ts
@@ -1,11 +1,15 @@
 import { rest } from "../../rest/rest.ts";
+import { GetGuildPruneCountQuery } from "../../types/guilds/get_guild_prune_count.ts";
 import { Errors } from "../../types/misc/errors.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotGuildPermissions } from "../../util/permissions.ts";
 import { camelKeysToSnakeCase } from "../../util/utils.ts";
 
 /** Check how many members would be removed from the server in a prune operation. Requires the KICK_MEMBERS permission */
-export async function getPruneCount(guildId: string, options?: PruneOptions) {
+export async function getPruneCount(
+  guildId: string,
+  options?: GetGuildPruneCountQuery,
+) {
   if (options?.days && options.days < 1) throw new Error(Errors.PRUNE_MIN_DAYS);
   if (options?.days && options.days > 30) {
     throw new Error(Errors.PRUNE_MAX_DAYS);
@@ -17,7 +21,7 @@ export async function getPruneCount(guildId: string, options?: PruneOptions) {
     "get",
     endpoints.GUILD_PRUNE(guildId),
     camelKeysToSnakeCase(options ?? {}),
-  ) as PrunePayload;
+  );
 
-  return result.pruned;
+  return result.pruned as number;
 }
diff --git a/src/helpers/guilds/get_vainty_url.ts b/src/helpers/guilds/get_vainty_url.ts
index 1ccac2a89..c80c65a81 100644
--- a/src/helpers/guilds/get_vainty_url.ts
+++ b/src/helpers/guilds/get_vainty_url.ts
@@ -1,12 +1,16 @@
 import { rest } from "../../rest/rest.ts";
+import { InviteMetadata } from "../../types/invites/invite_metadata.ts";
 import { endpoints } from "../../util/constants.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
-/** Returns the code and uses of the vanity url for this server if it is enabled. Requires the MANAGE_GUILD permission. */
+/** Returns the code and uses of the vanity url for this server if it is enabled else `code` will be null. Requires the `MANAGE_GUILD` permission. */
 export async function getVanityURL(guildId: string) {
   const result = await rest.runMethod(
     "get",
     endpoints.GUILD_VANITY_URL(guildId),
   );
 
-  return result;
+  return snakeKeysToCamelCase(result) as
+    | (Partial<InviteMetadata> & Pick<InviteMetadata, "uses" | "code">)
+    | { code: null };
 }
diff --git a/src/helpers/guilds/get_voice_regions.ts b/src/helpers/guilds/get_voice_regions.ts
index 8ac73d10a..166c7fa2a 100644
--- a/src/helpers/guilds/get_voice_regions.ts
+++ b/src/helpers/guilds/get_voice_regions.ts
@@ -1,9 +1,22 @@
 import { rest } from "../../rest/rest.ts";
+import {
+  DiscordVoiceRegion,
+  VoiceRegion,
+} from "../../types/voice/voice_region.ts";
+import { Collection } from "../../util/collection.ts";
 import { endpoints } from "../../util/constants.ts";
+import { snakeKeysToCamelCase } from "../../util/utils.ts";
 
 /** Returns a list of voice region objects for the guild. Unlike the similar /voice route, this returns VIP servers when the guild is VIP-enabled. */
 export async function getVoiceRegions(guildId: string) {
-  const result = await rest.runMethod("get", endpoints.GUILD_REGIONS(guildId));
+  const result = await rest.runMethod(
+    "get",
+    endpoints.GUILD_REGIONS(guildId),
+  ) as DiscordVoiceRegion[];
 
-  return result;
+  const convertedRegions = snakeKeysToCamelCase<VoiceRegion[]>(result);
+
+  return new Collection<string, VoiceRegion>(
+    convertedRegions.map((region) => [region.id, region]),
+  );
 }
diff --git a/src/helpers/guilds/get_widget_image_url.ts b/src/helpers/guilds/get_widget_image_url.ts
index 6e9eb01b8..f552a2326 100644
--- a/src/helpers/guilds/get_widget_image_url.ts
+++ b/src/helpers/guilds/get_widget_image_url.ts
@@ -1,14 +1,12 @@
 import { cacheHandlers } from "../../cache.ts";
+import { GetGuildWidgetImageQuery } from "../../types/guilds/get_guild_widget_image.ts";
 import { Errors } from "../../types/misc/errors.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /** Returns the widget image URL for the guild. */
 export async function getWidgetImageURL(
   guildId: string,
-  options?: {
-    style?: "shield" | "banner1" | "banner2" | "banner3" | "banner4";
-    force?: boolean;
-  },
+  options?: GetGuildWidgetImageQuery & { force?: boolean },
 ) {
   if (!options?.force) {
     const guild = await cacheHandlers.get("guilds", guildId);
diff --git a/src/helpers/guilds/get_widget_settings.ts b/src/helpers/guilds/get_widget_settings.ts
index 3b719e7c6..8d28e8c9c 100644
--- a/src/helpers/guilds/get_widget_settings.ts
+++ b/src/helpers/guilds/get_widget_settings.ts
@@ -1,4 +1,5 @@
 import { rest } from "../../rest/rest.ts";
+import { GuildWidget } from "../../types/guilds/guild_widget.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotGuildPermissions } from "../../util/permissions.ts";
 
@@ -8,5 +9,5 @@ export async function getWidgetSettings(guildId: string) {
 
   const result = await rest.runMethod("get", endpoints.GUILD_WIDGET(guildId));
 
-  return result;
+  return result as GuildWidget;
 }
diff --git a/src/helpers/guilds/guild_banner_url.ts b/src/helpers/guilds/guild_banner_url.ts
index 89e07efe4..db027d15b 100644
--- a/src/helpers/guilds/guild_banner_url.ts
+++ b/src/helpers/guilds/guild_banner_url.ts
@@ -6,7 +6,7 @@ import { formatImageURL } from "../../util/utils.ts";
 /** The full URL of the banner from Discords CDN. Undefined if no banner is set. */
 export function guildBannerURL(
   id: string,
-  banner: string,
+  banner?: string,
   size: DiscordImageSize = 128,
   format?: DiscordImageFormat,
 ) {
diff --git a/src/helpers/guilds/guild_icon_url.ts b/src/helpers/guilds/guild_icon_url.ts
index 5acb8408f..b1e02e6f2 100644
--- a/src/helpers/guilds/guild_icon_url.ts
+++ b/src/helpers/guilds/guild_icon_url.ts
@@ -6,7 +6,7 @@ import { formatImageURL } from "../../util/utils.ts";
 /** The full URL of the icon from Discords CDN. Undefined when no icon is set. */
 export function guildIconURL(
   id: string,
-  icon: string,
+  icon?: string,
   size: DiscordImageSize = 128,
   format?: DiscordImageFormat,
 ) {
diff --git a/src/helpers/guilds/guild_splash_url.ts b/src/helpers/guilds/guild_splash_url.ts
index 0c51fb682..9409a0e99 100644
--- a/src/helpers/guilds/guild_splash_url.ts
+++ b/src/helpers/guilds/guild_splash_url.ts
@@ -6,7 +6,7 @@ import { formatImageURL } from "../../util/utils.ts";
 /** The full URL of the splash from Discords CDN. Undefined if no splash is set. */
 export function guildSplashURL(
   id: string,
-  splash: string,
+  splash?: string,
   size: DiscordImageSize = 128,
   format?: DiscordImageFormat,
 ) {
diff --git a/src/helpers/guilds/leave_guild.ts b/src/helpers/guilds/leave_guild.ts
index d103a0df3..805b56885 100644
--- a/src/helpers/guilds/leave_guild.ts
+++ b/src/helpers/guilds/leave_guild.ts
@@ -2,7 +2,7 @@ import { rest } from "../../rest/rest.ts";
 import { endpoints } from "../../util/constants.ts";
 
 /** Leave a guild */
-export async function leaveGuild(guildId: string) {
+export async function leaveGuild(guildId: string): Promise<undefined> {
   const result = await rest.runMethod("delete", endpoints.GUILD_LEAVE(guildId));
 
   return result;
diff --git a/src/helpers/messages/send_message.ts b/src/helpers/messages/send_message.ts
index b7c628917..e80f5ff72 100644
--- a/src/helpers/messages/send_message.ts
+++ b/src/helpers/messages/send_message.ts
@@ -2,15 +2,19 @@ import { cacheHandlers } from "../../cache.ts";
 import { rest } from "../../rest/rest.ts";
 import { structures } from "../../structures/mod.ts";
 import { DiscordChannelTypes } from "../../types/channels/channel_types.ts";
+import { DiscordenoCreateMessage } from "../../types/discordeno/create_message.ts";
+import { DiscordAllowedMentionsTypes } from "../../types/messages/allowed_mentions_types.ts";
+import { DiscordMessage } from "../../types/messages/message.ts";
 import { Errors } from "../../types/misc/errors.ts";
 import { PermissionStrings } from "../../types/permissions/permission_strings.ts";
 import { endpoints } from "../../util/constants.ts";
 import { requireBotChannelPermissions } from "../../util/permissions.ts";
+import { camelKeysToSnakeCase } from "../../util/utils.ts";
 
 /** Send a message to the channel. Requires SEND_MESSAGES permission. */
 export async function sendMessage(
   channelId: string,
-  content: string | MessageContent,
+  content: string | DiscordenoCreateMessage,
 ) {
   if (typeof content === "string") content = { content };
 
@@ -33,7 +37,10 @@ export async function sendMessage(
 
     if (content.tts) requiredPerms.add("SEND_TTS_MESSAGES");
     if (content.embed) requiredPerms.add("EMBED_LINKS");
-    if (content.replyMessageId || content.mentions?.repliedUser) {
+    if (
+      content.messageReference?.messageId ||
+      content.allowedMentions?.repliedUser
+    ) {
       requiredPerms.add("READ_MESSAGE_HISTORY");
     }
 
@@ -45,50 +52,63 @@ export async function sendMessage(
     throw new Error(Errors.MESSAGE_MAX_LENGTH);
   }
 
-  if (content.mentions) {
-    if (content.mentions.users?.length) {
-      if (content.mentions.parse?.includes("users")) {
-        content.mentions.parse = content.mentions.parse.filter(
+  if (content.allowedMentions) {
+    if (content.allowedMentions.users?.length) {
+      if (
+        content.allowedMentions.parse?.includes(
+          DiscordAllowedMentionsTypes.UserMentions,
+        )
+      ) {
+        content.allowedMentions.parse = content.allowedMentions.parse.filter(
           (p) => p !== "users",
         );
       }
 
-      if (content.mentions.users.length > 100) {
-        content.mentions.users = content.mentions.users.slice(0, 100);
+      if (content.allowedMentions.users.length > 100) {
+        content.allowedMentions.users = content.allowedMentions.users.slice(
+          0,
+          100,
+        );
       }
     }
 
-    if (content.mentions.roles?.length) {
-      if (content.mentions.parse?.includes("roles")) {
-        content.mentions.parse = content.mentions.parse.filter(
+    if (content.allowedMentions.roles?.length) {
+      if (
+        content.allowedMentions.parse?.includes(
+          DiscordAllowedMentionsTypes.RoleMentions,
+        )
+      ) {
+        content.allowedMentions.parse = content.allowedMentions.parse.filter(
           (p) => p !== "roles",
         );
       }
 
-      if (content.mentions.roles.length > 100) {
-        content.mentions.roles = content.mentions.roles.slice(0, 100);
+      if (content.allowedMentions.roles.length > 100) {
+        content.allowedMentions.roles = content.allowedMentions.roles.slice(
+          0,
+          100,
+        );
       }
     }
   }
 
   const result =
-    (await rest.runMethod("post", endpoints.CHANNEL_MESSAGES(channelId), {
-      ...content,
-      allowed_mentions: content.mentions
-        ? {
-          ...content.mentions,
-          replied_user: content.mentions.repliedUser,
-        }
-        : undefined,
-      ...(content.replyMessageId
-        ? {
-          message_reference: {
-            message_id: content.replyMessageId,
-            fail_if_not_exists: content.failReplyIfNotExists === true,
-          },
-        }
-        : {}),
-    })) as MessageCreateOptions;
+    (await rest.runMethod(
+      "post",
+      endpoints.CHANNEL_MESSAGES(channelId),
+      camelKeysToSnakeCase({
+        ...content,
+        ...(content.messageReference?.messageId
+          ? {
+            messageReference: {
+              ...content.messageReference,
+              failIfNotExists:
+                content.messageReference.failIfNotExists === true,
+            },
+          }
+          : {}),
+      }),
+    )) as DiscordMessage;
 
   return structures.createMessageStruct(result);
 }
diff --git a/src/helpers/messages/unpin_message.ts b/src/helpers/messages/unpin_message.ts
index db19544ef..c2a5630bf 100644
--- a/src/helpers/messages/unpin_message.ts
+++ b/src/helpers/messages/unpin_message.ts
@@ -3,7 +3,10 @@ import { endpoints } from "../../util/constants.ts";
 import { requireBotChannelPermissions } from "../../util/permissions.ts";
 
 /** Unpin a message in a channel. Requires MANAGE_MESSAGES. */
-export async function unpin(channelId: string, messageId: string) {
+export async function unpin(
+  channelId: string,
+  messageId: string,
+): Promise<undefined> {
   await requireBotChannelPermissions(channelId, ["MANAGE_MESSAGES"]);
 
   const result = await rest.runMethod(
diff --git a/src/rest/run_method.ts b/src/rest/run_method.ts
index 6c3780b4c..19afefb8c 100644
--- a/src/rest/run_method.ts
+++ b/src/rest/run_method.ts
@@ -1,16 +1,14 @@
 import { Errors } from "../types/misc/errors.ts";
-import { IMAGE_BASE_URL } from "../util/constants.ts";
-import { API_VERSION } from "../util/constants.ts";
-import { BASE_URL } from "../util/constants.ts";
+import { API_VERSION, BASE_URL, IMAGE_BASE_URL } from "../util/constants.ts";
 import { rest } from "./rest.ts";
 
-export function runMethod(
+export function runMethod<T = any>(
   method: "get" | "post" | "put" | "delete" | "patch",
   url: string,
   body?: unknown,
   retryCount = 0,
   bucketId?: string | null,
-) {
+): Promise<T | undefined> {
   rest.eventHandlers.debug?.("requestCreate", {
     method,
     url,
@@ -37,7 +35,7 @@ export function runMethod(
       .then((res) => {
         if (res.status === 204) return undefined;
 
-        return res.json();
+        return res.json() as unknown as T;
       })
       .catch((error) => {
         console.error(error);
diff --git a/src/structures/guild.ts b/src/structures/guild.ts
index 6d7c1287e..488450f11 100644
--- a/src/structures/guild.ts
+++ b/src/structures/guild.ts
@@ -13,17 +13,30 @@ import { getInvites } from "../helpers/invites/get_invites.ts";
 import { banMember } from "../helpers/members/ban_member.ts";
 import { unbanMember } from "../helpers/members/unban_member.ts";
 import { GetGuildAuditLog } from "../types/audit_log/get_guild_audit_log.ts";
+import { Emoji } from "../types/emojis/emoji.ts";
 import { CreateGuildBan } from "../types/guilds/create_guild_ban.ts";
 import { DiscordGuild, Guild } from "../types/guilds/guild.ts";
 import { DiscordGuildFeatures } from "../types/guilds/guild_features.ts";
-import { GuildMember } from "../types/guilds/guild_member.ts";
+import {
+  DiscordGuildMember,
+  GuildMember,
+} from "../types/guilds/guild_member.ts";
 import { ModifyGuild } from "../types/guilds/modify_guild.ts";
 import { DiscordImageFormat } from "../types/misc/image_format.ts";
 import { DiscordImageSize } from "../types/misc/image_size.ts";
 import { PresenceUpdate } from "../types/misc/presence_update.ts";
+import { DiscordUser } from "../types/users/user.ts";
+import { VoiceState } from "../types/voice/voice_state.ts";
 import { Collection } from "../util/collection.ts";
-import { createNewProp, snakeKeysToCamelCase } from "../util/utils.ts";
-import { RoleStruct, structures } from "./mod.ts";
+import {
+  camelKeysToSnakeCase,
+  createNewProp,
+  snakeKeysToCamelCase,
+} from "../util/utils.ts";
+import { ChannelStruct } from "./channel.ts";
+import { MemberStruct } from "./member.ts";
+import { structures } from "./mod.ts";
+import { RoleStruct } from "./role.ts";
 
 export const initialMemberLoadQueue = new Map<string, GuildMember[]>();
 
@@ -118,7 +131,9 @@ export async function createGuildStruct(
   } = snakeKeysToCamelCase(data) as Guild;
 
   const roles = await Promise.all(
-    data.roles.map((role) => structures.createRoleStruct(role)),
+    data.roles.map((role) =>
+      structures.createRoleStruct({ role, guild_id: rest.id })
+    ),
   );
 
   await Promise.all(channels.map(async (channel) => {
@@ -164,7 +179,9 @@ export async function createGuildStruct(
     await Promise.allSettled(
       members.map(async (member) => {
         const memberStruct = await structures.createMemberStruct(
-          member,
+          camelKeysToSnakeCase(member) as Omit<DiscordGuildMember, "user"> & {
+            user: DiscordUser;
+          },
           guild.id,
         );
 
@@ -179,14 +196,25 @@ export async function createGuildStruct(
 export interface GuildStruct extends
   Omit<
     Guild,
-    "roles" | "presences" | "voiceStates" | "members" | "channels"
+    | "roles"
+    | "presences"
+    | "voiceStates"
+    | "members"
+    | "channels"
+    | "memberCount"
+    | "owner"
+    | "emojis"
   > {
+  /** Total number of members in this guild */
+  memberCount?: number;
   /** The roles in the guild */
   roles: Collection<string, RoleStruct>;
   /** The presences of all the users in the guild. */
   presences: Collection<string, PresenceUpdate>;
   /** The Voice State data for each user in a voice channel in this server. */
-  voiceStates: Collection<string, CleanVoiceState>;
+  voiceStates: Collection<string, VoiceState>;
+  /** Custom guild emojis */
+  emojis: Collection<string, Emoji>;
 
   // GETTERS
   /** Members in this guild. */
@@ -204,9 +232,12 @@ export interface GuildStruct extends
   /** The bot member in this guild if cached */
   bot?: MemberStruct;
   /** The bot guild member in this guild if cached */
-  botMember?: GuildMember;
+  botMember?: Omit<GuildMember, "joinedAt" | "premiumSince"> & {
+    joinedAt: number;
+    premiumSince?: number;
+  };
   /** The bots voice state if there is one in this guild */
-  botVoice?: CleanVoiceState;
+  botVoice?: VoiceState;
   /** The owner member of this guild */
   owner?: MemberStruct;
   /** Whether or not this guild is partnered */
diff --git a/src/structures/member.ts b/src/structures/member.ts
index 9bf687d06..376250820 100644
--- a/src/structures/member.ts
+++ b/src/structures/member.ts
@@ -6,13 +6,13 @@ import { kickMember } from "../helpers/members/kick_member.ts";
 import { sendDirectMessage } from "../helpers/members/send_direct_message.ts";
 import { addRole } from "../helpers/roles/add_role.ts";
 import { removeRole } from "../helpers/roles/remove_role.ts";
-import { CreateMessage } from "../types/channels/create_message.ts";
 import { CreateGuildBan } from "../types/guilds/create_guild_ban.ts";
 import {
   DiscordGuildMember,
   GuildMember,
 } from "../types/guilds/guild_member.ts";
 import { ModifyGuildMember } from "../types/guilds/modify_guild_member.ts";
+import { CreateMessage } from "../types/messages/create_message.ts";
 import { DiscordImageFormat } from "../types/misc/image_format.ts";
 import { DiscordImageSize } from "../types/misc/image_size.ts";
 import { DiscordUser, User } from "../types/users/user.ts";
@@ -151,7 +151,14 @@ export interface MemberStruct extends GuildMember, User {
   /** Get the nickname or the username if no nickname */
   name(guildID: string): string;
   /** Get the guild member object for the specified guild */
-  guildMember(guildID: string): GuildMember | undefined;
+  guildMember(
+    guildID: string,
+  ):
+    | Omit<GuildMember, "joinedAt" | "premiumSince"> & {
+      joinedAt: number;
+      premiumSince?: number;
+    }
+    | undefined;
   /** Send a direct message to the user is possible */
   sendDM(
     content: string | CreateMessage,
diff --git a/src/structures/message.ts b/src/structures/message.ts
index 577b965c1..99d8eb926 100644
--- a/src/structures/message.ts
+++ b/src/structures/message.ts
@@ -9,10 +9,18 @@ import { removeAllReactions } from "../helpers/messages/remove_all_reactions.ts"
 import { removeReaction } from "../helpers/messages/remove_reaction.ts";
 import { removeReactionEmoji } from "../helpers/messages/remove_reaction_emoji.ts";
 import { sendMessage } from "../helpers/messages/send_message.ts";
+import { DiscordenoCreateMessage } from "../types/discordeno/create_message.ts";
+import { GuildMember } from "../types/guilds/guild_member.ts";
+import { EditMessage } from "../types/messages/edit_message.ts";
+import { DiscordMessage, Message } from "../types/messages/message.ts";
 import { CHANNEL_MENTION_REGEX } from "../util/constants.ts";
-import { createNewProp } from "../util/utils.ts";
+import { createNewProp, snakeKeysToCamelCase } from "../util/utils.ts";
+import { ChannelStruct } from "./channel.ts";
+import { GuildStruct } from "./guild.ts";
+import { MemberStruct } from "./member.ts";
+import { RoleStruct } from "./role.ts";
 
-const baseMessage: Partial<Message> = {
+const baseMessage: Partial<MessageStruct> = {
   get channel() {
     if (this.guildId) return cache.channels.get(this.channelId!);
     return cache.channels.get(this.author?.id!);
@@ -34,13 +42,13 @@ const baseMessage: Partial<Message> = {
       "@me"}/${this.channelId}/${this.id}`;
   },
   get mentionedRoles() {
-    return this.mentionRoleIds?.map((id) => this.guild?.roles.get(id)) || [];
+    return this.mentionedRoleIds?.map((id) => this.guild?.roles.get(id)) || [];
   },
   get mentionedChannels() {
-    return this.mentionChannelIds?.map((id) => cache.channels.get(id)) || [];
+    return this.mentionedChannelIds?.map((id) => cache.channels.get(id)) || [];
   },
   get mentionedMembers() {
-    return this.mentions?.map((id) => cache.members.get(id)) || [];
+    return this.mentionedUserIds?.map((id) => cache.members.get(id)) || [];
   },
 
   // METHODS
@@ -69,9 +77,10 @@ const baseMessage: Partial<Message> = {
       }
       : {
         ...content,
-        mentions: { ...(content.mentions || {}), repliedUser: true },
+        mentions: { ...(content.allowedMentions || {}), repliedUser: true },
         replyMessageId: this.id,
-        failReplyIfNotExists: content.failReplyIfNotExists === true,
+        failReplyIfNotExists:
+          content.messageReference?.failIfNotExists === true,
       };
 
     if (this.guildId) return sendMessage(this.channelId!, contentWithMention);
@@ -108,58 +117,126 @@ const baseMessage: Partial<Message> = {
   },
 };
 
-export async function createMessageStruct(data: MessageCreateOptions) {
+export async function createMessageStruct(data: DiscordMessage) {
   const {
-    guild_id: guildId = "",
-    channel_id: channelId,
-    mentions_everyone: mentionsEveryone,
-    mention_channels: mentionChannelIds = [],
-    mention_roles: mentionRoleIds,
-    webhook_id: webhookId,
-    message_reference: messageReference,
+    guildId = "",
+    channelId,
+    mentionChannels = [],
+    mentions,
+    mentionRoles,
     edited_timestamp: editedTimestamp,
-    referenced_message: referencedMessageId,
-    member,
     ...rest
-  } = data;
+  } = snakeKeysToCamelCase(data) as Message;
 
-  const restProps: Record<string, ReturnType<typeof createNewProp>> = {};
+  const props: Record<string, ReturnType<typeof createNewProp>> = {};
   for (const key of Object.keys(rest)) {
     // @ts-ignore index signature
-    restProps[key] = createNewProp(rest[key]);
+    props[key] = createNewProp(rest[key]);
   }
 
   // Discord doesnt give guild id for getMessage() so this will fill it in
   const guildIdFinal = guildId ||
     (await cacheHandlers.get("channels", channelId))?.guildId || "";
 
-  const message = Object.create(baseMessage, {
-    ...restProps,
+  const message: MessageStruct = Object.create(baseMessage, {
+    ...props,
     /** The message id of the original message if this message was sent as a reply. If null, the original message was deleted. */
-    referencedMessageId: createNewProp(referencedMessageId),
     channelId: createNewProp(channelId),
-    guildId: createNewProp(guildId || guildIdFinal),
-    mentions: createNewProp(data.mentions.map((m) => m.id)),
-    mentionsEveryone: createNewProp(mentionsEveryone),
-    mentionRoleIds: createNewProp(mentionRoleIds),
-    mentionChannelIds: createNewProp(
+    guildId: createNewProp(guildIdFinal),
+    mentionedUserIds: createNewProp(mentions.map((m) => m.id)),
+    mentionedRoleIds: createNewProp(mentionRoles),
+    mentionedChannelIds: createNewProp(
       [
         // Keep any ids that discord sends
-        ...mentionChannelIds,
+        ...mentionChannels.map((m) => m.id),
         // Add any other ids that can be validated in a channel mention format
         ...(rest.content.match(CHANNEL_MENTION_REGEX) || []).map((text) =>
           // converts the <#123> into 123
           text.substring(2, text.length - 1)
         ),
-      ].map((m) => m.id),
+      ],
     ),
-    webhookId: createNewProp(webhookId),
-    messageReference: createNewProp(messageReference),
     timestamp: createNewProp(Date.parse(data.timestamp)),
     editedTimestamp: createNewProp(
       editedTimestamp ? Date.parse(editedTimestamp) : undefined,
     ),
   });
 
-  return message as Message;
+  return message;
+}
+
+export interface MessageStruct extends Message {
+  // For better user experience
+  /** Ids of users specifically mentioned in the message */
+  mentionedUserIds: string[];
+  /** Ids of roles specifically mentioned in this message */
+  mentionedRoleIds: string[];
+  /** Channels specifically mentioned in this message */
+  mentionedChannelIds?: string[];
+  // GETTERS
+
+  /** The channel where this message was sent. Can be undefined if uncached. */
+  channel?: ChannelStruct;
+  /** The guild of this message. Can be undefined if not in cache or in DM */
+  guild?: GuildStruct;
+  /** The member for the user who sent the message. Can be undefined if not in cache or in dm. */
+  member?: MemberStruct;
+  /** The guild member details for this guild and member. Can be undefined if not in cache or in dm. */
+  guildMember?: Omit<GuildMember, "joinedAt" | "premiumSince"> & {
+    joinedAt: number;
+    premiumSince?: number;
+  };
+  /** The url link to this message */
+  link: string;
+  /** The role objects for all the roles that were mentioned in this message */
+  mentionedRoles: (RoleStruct | undefined)[];
+  /** The channel objects for all the channels that were mentioned in this message. */
+  mentionedChannels: (ChannelStruct | undefined)[];
+  /** The member objects for all the members that were mentioned in this message. */
+  mentionedMembers: (MemberStruct | undefined)[];
+
+  // METHODS
+
+  /** Delete the message */
+  delete(
+    reason?: string,
+    delayMilliseconds?: number,
+  ): ReturnType<typeof deleteMessage>;
+  /** Edit the message */
+  edit(content: string | EditMessage): ReturnType<typeof editMessage>;
+  /** Pins the message in the channel */
+  pin(): ReturnType<typeof pinMessage>;
+  /** Add a reaction to the message */
+  addReaction(reaction: string): ReturnType<typeof addReaction>;
+  /** Add multiple reactions to the message without or without order. */
+  addReactions(
+    reactions: string[],
+    ordered?: boolean,
+  ): ReturnType<typeof addReactions>;
+  /** Send a inline reply to this message */
+  reply(
+    content: string | DiscordenoCreateMessage,
+  ): ReturnType<typeof sendMessage>;
+  /** Send a message to this channel where this message is */
+  send(
+    content: string | DiscordenoCreateMessage,
+  ): ReturnType<typeof sendMessage>;
+  /** Send a message to this channel and then delete it after a bit. By default it will delete after 10 seconds with no reason provided. */
+  alert(
+    content: string | DiscordenoCreateMessage,
+    timeout?: number,
+    reason?: string,
+  ): Promise<void>;
+  /** Send a inline reply to this message but then delete it after a bit. By default it will delete after 10 seconds with no reason provided.  */
+  alertReply(
+    content: string | DiscordenoCreateMessage,
+    timeout?: number,
+    reason?: string,
+  ): Promise<unknown>;
+  /** Remove all reactions */
+  removeAllReactions(): ReturnType<typeof removeAllReactions>;
+  /** Remove all reactions */
+  removeReactionEmoji(reaction: string): ReturnType<typeof removeReactionEmoji>;
+  /** Remove all reactions */
+  removeReaction(reaction: string): ReturnType<typeof removeReaction>;
 }
diff --git a/src/types/discordeno/create_slash_command.ts b/src/types/discordeno/create_slash_command.ts
new file mode 100644
index 000000000..969ac33fc
--- /dev/null
+++ b/src/types/discordeno/create_slash_command.ts
@@ -0,0 +1,7 @@
+import { CreateGlobalApplicationCommand } from "../interactions/create_global_application_command.ts";
+
+export interface DiscordenoCreateApplicationCommand
+  extends CreateGlobalApplicationCommand {
+  /** Id of the guild to create a guild only application command */
+  guildId: string;
+}
diff --git a/src/types/discordeno/edit_webhook_message.ts b/src/types/discordeno/edit_webhook_message.ts
new file mode 100644
index 000000000..97ee0af14
--- /dev/null
+++ b/src/types/discordeno/edit_webhook_message.ts
@@ -0,0 +1,6 @@
+import { EditWebhookMessage } from "../webhooks/edit_webhook_message.ts";
+
+export interface DiscordenoEditWebhookMessage extends EditWebhookMessage {
+  /** Id of the message you want to edit */
+  messageId: string;
+}
diff --git a/src/types/discordeno/guild_member.ts b/src/types/discordeno/guild_member.ts
new file mode 100644
index 000000000..e69de29bb
diff --git a/src/types/discordeno/guild_update_change.ts b/src/types/discordeno/guild_update_change.ts
new file mode 100644
index 000000000..32e9e966e
--- /dev/null
+++ b/src/types/discordeno/guild_update_change.ts
@@ -0,0 +1,7 @@
+import { Guild } from "../guilds/guild.ts";
+
+export interface GuildUpdateChange {
+  key: keyof Guild;
+  oldValue?: unknown;
+  value?: unknown;
+}
diff --git a/src/types/discordeno/interaction_response.ts b/src/types/discordeno/interaction_response.ts
new file mode 100644
index 000000000..4e598eebe
--- /dev/null
+++ b/src/types/discordeno/interaction_response.ts
@@ -0,0 +1,6 @@
+import { InteractionResponse } from "../interactions/interaction_response.ts";
+
+export interface DiscordenoInteractionResponse extends InteractionResponse {
+  /** Set to true if the response should be private */
+  private?: boolean;
+}
diff --git a/src/types/guilds/create_guild_integration.ts b/src/types/integration/create_guild_integration.ts
similarity index 100%
rename from src/types/guilds/create_guild_integration.ts
rename to src/types/integration/create_guild_integration.ts
diff --git a/src/types/guilds/guild_integrations_update.ts b/src/types/integration/guild_integrations_update.ts
similarity index 100%
rename from src/types/guilds/guild_integrations_update.ts
rename to src/types/integration/guild_integrations_update.ts
diff --git a/src/types/guilds/integration.ts b/src/types/integration/integration.ts
similarity index 100%
rename from src/types/guilds/integration.ts
rename to src/types/integration/integration.ts
diff --git a/src/types/guilds/integration_account.ts b/src/types/integration/integration_account.ts
similarity index 100%
rename from src/types/guilds/integration_account.ts
rename to src/types/integration/integration_account.ts
diff --git a/src/types/guilds/integration_application.ts b/src/types/integration/integration_application.ts
similarity index 100%
rename from src/types/guilds/integration_application.ts
rename to src/types/integration/integration_application.ts
diff --git a/src/types/integration/integration_create_update.ts b/src/types/integration/integration_create_update.ts
new file mode 100644
index 000000000..022e879f3
--- /dev/null
+++ b/src/types/integration/integration_create_update.ts
@@ -0,0 +1,12 @@
+import { SnakeCaseProps } from "../util.ts";
+import { Integration } from "./integration.ts";
+
+export interface IntegrationCreateUpdate extends Integration {
+  /** Id of the guild */
+  guildId: string;
+}
+
+/** https://github.com/discord/discord-api-docs/blob/master/docs/topics/Gateway.md#integration-create-event-additional-fields */
+export type DiscordIntegrationCreateUpdate = SnakeCaseProps<
+  IntegrationCreateUpdate
+>;
diff --git a/src/types/integration/integration_delete.ts b/src/types/integration/integration_delete.ts
new file mode 100644
index 000000000..34fca4f61
--- /dev/null
+++ b/src/types/integration/integration_delete.ts
@@ -0,0 +1,13 @@
+import { SnakeCaseProps } from "../util.ts";
+
+export interface IntegrationDelete {
+  /** Integration id */
+  id: string;
+  /** Id of the guild */
+  guildId: string;
+  /** Id of the bot/OAuth2 application for this discord integration */
+  applicationId?: string;
+}
+
+/** https://github.com/discord/discord-api-docs/blob/master/docs/topics/Gateway.md#integration-delete-event-fields */
+export type DiscordIntegrationDelete = SnakeCaseProps<IntegrationDelete>;
diff --git a/src/types/guilds/integration_expire_behaviors.ts b/src/types/integration/integration_expire_behaviors.ts
similarity index 100%
rename from src/types/guilds/integration_expire_behaviors.ts
rename to src/types/integration/integration_expire_behaviors.ts
diff --git a/src/types/guilds/modify_guild_integration.ts b/src/types/integration/modify_guild_integration.ts
similarity index 100%
rename from src/types/guilds/modify_guild_integration.ts
rename to src/types/integration/modify_guild_integration.ts
diff --git a/src/types/interactions/interaction.ts b/src/types/interactions/interaction.ts
index 927a9bc88..83980f33d 100644
--- a/src/types/interactions/interaction.ts
+++ b/src/types/interactions/interaction.ts
@@ -1,3 +1,4 @@
+import { GuildMember } from "../guilds/guild_member.ts";
 import { User } from "../users/user.ts";
 import { SnakeCaseProps } from "../util.ts";
 import { InteractionApplicationCommandCallbackData } from "./application_command_callback_data.ts";
diff --git a/src/types/invites/invite_metadata.ts b/src/types/invites/invite_metadata.ts
index 40d654ba5..e897bdc3c 100644
--- a/src/types/invites/invite_metadata.ts
+++ b/src/types/invites/invite_metadata.ts
@@ -1,6 +1,7 @@
 import { SnakeCaseProps } from "../util.ts";
+import { Invite } from "./invite.ts";
 
-export interface InviteMetadata {
+export interface InviteMetadata extends Invite {
   /** Number of times this invite has been used */
   uses: number;
   /** Max number of times this invite can be used */
diff --git a/src/types/messages/allowed_mentions.ts b/src/types/messages/allowed_mentions.ts
index 7fd30d41f..c77d6208f 100644
--- a/src/types/messages/allowed_mentions.ts
+++ b/src/types/messages/allowed_mentions.ts
@@ -5,11 +5,11 @@ export interface AllowedMentions {
   /** An array of allowed mention types to parse from the content. */
   parse: DiscordAllowedMentionsTypes[];
   /** Array of role_ids to mention (Max size of 100) */
-  roles: string[];
+  roles?: string[];
   /** Array of user_ids to mention (Max size of 100) */
-  users: string[];
+  users?: string[];
   /** For replies, whether to mention the author of the message being replied to (default false) */
-  repliedUser: boolean;
+  repliedUser?: boolean;
 }
 
 /** https://discord.com/developers/docs/resources/channel#allowed-mentions-object */
diff --git a/src/types/messages/create_message.ts b/src/types/messages/create_message.ts
index 4b3e97b87..b66a94ad8 100644
--- a/src/types/messages/create_message.ts
+++ b/src/types/messages/create_message.ts
@@ -1,6 +1,7 @@
 import { Embed } from "../embeds/embed.ts";
 import { AllowedMentions } from "../messages/allowed_mentions.ts";
 import { MessageReference } from "../messages/message_reference.ts";
+import { FileContent } from "../misc/file_content.ts";
 import { SnakeCaseProps } from "../util.ts";
 
 export interface CreateMessage {
@@ -16,7 +17,9 @@ export interface CreateMessage {
   allowedMentions?: AllowedMentions;
   /** Include to make your message a reply */
   messageReference?: MessageReference;
+  /** The contents of the file being sent */
+  file?: FileContent | FileContent[];
 }
 
 /** https://discord.com/developers/docs/resources/channel#create-message */
-export type DiscordCreateMessage = SnakeCaseProps<CreateMessage>;
+export type DiscordCreateMessage = SnakeCaseProps<Omit<CreateMessage, "file">>;
diff --git a/src/types/messages/edit_message.ts b/src/types/messages/edit_message.ts
new file mode 100644
index 000000000..d640625da
--- /dev/null
+++ b/src/types/messages/edit_message.ts
@@ -0,0 +1,17 @@
+import { Embed } from "../embeds/embed.ts";
+import { SnakeCaseProps } from "../util.ts";
+import { AllowedMentions } from "./allowed_mentions.ts";
+
+export interface EditMessage {
+  /** The new message contents (up to 2000 characters) */
+  content?: string | null;
+  /** Embedded `rich` content */
+  embed?: Embed | null;
+  /** Edit the flags of the message (only `SUPRESS_EMBEDS` can currently be set/unset) */
+  flags?: 4 | null;
+  /** Allowed mentions for the message */
+  allowedMentions?: AllowedMentions | null;
+}
+
+/** https://discord.com/developers/docs/resources/channel#edit-message-json-params */
+export type DiscordEditMessage = SnakeCaseProps<EditMessage>;
diff --git a/src/util/permissions.ts b/src/util/permissions.ts
index 62ee90feb..eda69d7a8 100644
--- a/src/util/permissions.ts
+++ b/src/util/permissions.ts
@@ -5,15 +5,18 @@ import { Errors } from "../types/misc/errors.ts";
 import { DiscordBitwisePermissionFlags } from "../types/permissions/bitwise_permission_flags.ts";
 import { PermissionStrings } from "../types/permissions/permission_strings.ts";
 
-async function getCached(table: "guilds", key: string | Guild): Promise<Guild>;
+async function getCached(
+  table: "guilds",
+  key: string | Guild,
+): Promise<Guild | undefined>;
 async function getCached(
   table: "channels",
   key: string | Channel,
-): Promise<Channel>;
+): Promise<Channel | undefined>;
 async function getCached(
   table: "members",
   key: string | Member,
-): Promise<Member>;
+): Promise<Member | undefined>;
 async function getCached(
   table: "guilds" | "channels" | "members",
   key: string | Guild | Channel | Member,
@@ -28,7 +31,7 @@ async function getCached(
     );
   }
 
-  return cached;
+  return typeof cached === "string" ? undefined : cached;
 }
 
 /** Calculates the permissions this member has in the given guild */
@@ -39,6 +42,8 @@ export async function calculateBasePermissions(
   guild = await getCached("guilds", guild);
   member = await getCached("members", member);
 
+  if (!guild || !member) return "8";
+
   let permissions = 0n;
   // Calculate the role permissions bits, @everyone role is not in memberRoleIds so we need to pass guildId manualy
   permissions |= [...(member.guilds.get(guild.id)?.roles || []), guild.id]
@@ -64,10 +69,12 @@ export async function calculateChannelOverwrites(
   channel = await getCached("channels", channel);
 
   // This is a DM channel so return ADMINISTRATOR permission
-  if (!channel.guildId) return "8";
+  if (!channel?.guildId) return "8";
 
   member = await getCached("members", member);
 
+  if (!member) return "8";
+
   // Get all the role permissions this member already has
   let permissions = BigInt(
     await calculateBasePermissions(channel.guildId, member),
@@ -285,8 +292,10 @@ export async function highestRole(
 ) {
   guild = await getCached("guilds", guild);
 
+  if (!guild) throw new Error(Errors.GUILD_NOT_FOUND);
+
   // Get the roles from the member
-  const memberRoles = (await getCached("members", member)).guilds.get(guild.id)
+  const memberRoles = (await getCached("members", member))?.guilds.get(guild.id)
     ?.roles;
   // This member has no roles so the highest one is the @everyone role
   if (!memberRoles) return guild.roles.get(guild.id) as Role;
@@ -321,6 +330,8 @@ export async function higherRolePosition(
 ) {
   guild = await getCached("guilds", guild);
 
+  if (!guild) return true;
+
   const role = guild.roles.get(roleId);
   const otherRole = guild.roles.get(otherRoleId);
   if (!role || !otherRole) throw new Error(Errors.ROLE_NOT_FOUND);
@@ -341,7 +352,7 @@ export async function isHigherPosition(
 ) {
   guild = await getCached("guilds", guild);
 
-  if (guild.ownerId === memberId) return true;
+  if (!guild || guild.ownerId === memberId) return true;
 
   const memberHighestRole = await highestRole(guild, memberId);
   return higherRolePosition(guild.id, memberHighestRole.id, compareRoleId);
diff --git a/src/util/utils.ts b/src/util/utils.ts
index f06d38b7e..5c012433e 100644
--- a/src/util/utils.ts
+++ b/src/util/utils.ts
@@ -72,7 +72,9 @@ function isObject(obj: unknown) {
 }
 
 // deno-lint-ignore no-explicit-any
-export function camelKeysToSnakeCase(obj: Record<string, any>) {
+export function camelKeysToSnakeCase<T>(
+  obj: Record<string, any> | Record<string, any>[],
+): T {
   if (isObject(obj)) {
     // deno-lint-ignore no-explicit-any
     const convertedObject: Record<string, any> = {};
@@ -80,20 +82,22 @@ export function camelKeysToSnakeCase(obj: Record<string, any>) {
     Object.keys(obj)
       .forEach((key) => {
         convertedObject[camelToSnakeCase(key)] = camelKeysToSnakeCase(
-          obj[key],
+          (obj as Record<string, any>)[key],
         );
       });
 
-    return convertedObject;
+    return convertedObject as T;
   } else if (Array.isArray(obj)) {
     obj = obj.map((element) => camelKeysToSnakeCase(element));
   }
 
-  return obj;
+  return obj as T;
 }
 
 // deno-lint-ignore no-explicit-any
-export function snakeKeysToCamelCase(obj: Record<string, any>) {
+export function snakeKeysToCamelCase<T>(
+  obj: Record<string, any> | Record<string, any>[],
+): T {
   if (isObject(obj)) {
     // deno-lint-ignore no-explicit-any
     const convertedObject: Record<string, any> = {};
@@ -101,16 +105,16 @@ export function snakeKeysToCamelCase(obj: Record<string, any>) {
     Object.keys(obj)
       .forEach((key) => {
         convertedObject[snakeToCamelCase(key)] = snakeKeysToCamelCase(
-          obj[key],
+          (obj as Record<string, any>)[key],
         );
       });
 
-    return convertedObject;
+    return convertedObject as T;
   } else if (Array.isArray(obj)) {
     obj = obj.map((element) => snakeKeysToCamelCase(element));
   }
 
-  return obj;
+  return obj as T;
 }
 
 /** @private */