diff --git a/src/client/actions/Action.js b/src/client/actions/Action.js
index 743faad0f..10de53702 100644
--- a/src/client/actions/Action.js
+++ b/src/client/actions/Action.js
@@ -26,7 +26,7 @@ class GenericAction {
   getPayload(data, manager, id, partialType, cache) {
     const existing = manager.cache.get(id);
     if (!existing && this.client.options.partials.includes(partialType)) {
-      return manager.add(data, cache);
+      return manager._add(data, cache);
     }
     return existing;
   }
@@ -93,9 +93,9 @@ class GenericAction {
     if (data.guild_id && data.member?.user) {
       const guild = this.client.guilds.cache.get(data.guild_id);
       if (guild) {
-        return guild.members.add(data.member).user;
+        return guild.members._add(data.member).user;
       } else {
-        return this.client.users.add(data.member.user);
+        return this.client.users._add(data.member.user);
       }
     }
     return this.getUser(data);
diff --git a/src/client/actions/ChannelCreate.js b/src/client/actions/ChannelCreate.js
index d1660aa76..68eb2dc06 100644
--- a/src/client/actions/ChannelCreate.js
+++ b/src/client/actions/ChannelCreate.js
@@ -7,7 +7,7 @@ class ChannelCreateAction extends Action {
   handle(data) {
     const client = this.client;
     const existing = client.channels.cache.has(data.id);
-    const channel = client.channels.add(data);
+    const channel = client.channels._add(data);
     if (!existing && channel) {
       /**
        * Emitted whenever a guild channel is created.
diff --git a/src/client/actions/ChannelDelete.js b/src/client/actions/ChannelDelete.js
index 9b3bd4cb0..ad5cffd9a 100644
--- a/src/client/actions/ChannelDelete.js
+++ b/src/client/actions/ChannelDelete.js
@@ -15,7 +15,7 @@ class ChannelDeleteAction extends Action {
     const channel = client.channels.cache.get(data.id);
 
     if (channel) {
-      client.channels.remove(channel.id);
+      client.channels._remove(channel.id);
       channel.deleted = true;
       if (channel.messages && !(channel instanceof DMChannel)) {
         for (const message of channel.messages.cache.values()) {
diff --git a/src/client/actions/ChannelUpdate.js b/src/client/actions/ChannelUpdate.js
index ac875a32d..6fd2e95cc 100644
--- a/src/client/actions/ChannelUpdate.js
+++ b/src/client/actions/ChannelUpdate.js
@@ -25,7 +25,7 @@ class ChannelUpdateAction extends Action {
         updated: channel,
       };
     } else {
-      client.channels.add(data);
+      client.channels._add(data);
     }
 
     return {};
diff --git a/src/client/actions/GuildBanAdd.js b/src/client/actions/GuildBanAdd.js
index 2efe16347..e97e789fe 100644
--- a/src/client/actions/GuildBanAdd.js
+++ b/src/client/actions/GuildBanAdd.js
@@ -13,7 +13,7 @@ class GuildBanAdd extends Action {
      * @event Client#guildBanAdd
      * @param {GuildBan} ban The ban that occurred
      */
-    if (guild) client.emit(Events.GUILD_BAN_ADD, guild.bans.add(data));
+    if (guild) client.emit(Events.GUILD_BAN_ADD, guild.bans._add(data));
   }
 }
 
diff --git a/src/client/actions/GuildDelete.js b/src/client/actions/GuildDelete.js
index 89877fe89..057acbce7 100644
--- a/src/client/actions/GuildDelete.js
+++ b/src/client/actions/GuildDelete.js
@@ -36,7 +36,7 @@ class GuildDeleteAction extends Action {
         };
       }
 
-      for (const channel of guild.channels.cache.values()) this.client.channels.remove(channel.id);
+      for (const channel of guild.channels.cache.values()) this.client.channels._remove(channel.id);
       client.voice.adapters.get(data.id)?.destroy();
 
       // Delete guild
diff --git a/src/client/actions/GuildEmojiCreate.js b/src/client/actions/GuildEmojiCreate.js
index f47ddd5f2..ccc634cc8 100644
--- a/src/client/actions/GuildEmojiCreate.js
+++ b/src/client/actions/GuildEmojiCreate.js
@@ -6,7 +6,7 @@ const { Events } = require('../../util/Constants');
 class GuildEmojiCreateAction extends Action {
   handle(guild, createdEmoji) {
     const already = guild.emojis.cache.has(createdEmoji.id);
-    const emoji = guild.emojis.add(createdEmoji);
+    const emoji = guild.emojis._add(createdEmoji);
     /**
      * Emitted whenever a custom emoji is created in a guild.
      * @event Client#emojiCreate
diff --git a/src/client/actions/GuildMemberUpdate.js b/src/client/actions/GuildMemberUpdate.js
index 20edfc7b2..137351f45 100644
--- a/src/client/actions/GuildMemberUpdate.js
+++ b/src/client/actions/GuildMemberUpdate.js
@@ -9,7 +9,7 @@ class GuildMemberUpdateAction extends Action {
     if (data.user.username) {
       const user = client.users.cache.get(data.user.id);
       if (!user) {
-        client.users.add(data.user);
+        client.users._add(data.user);
       } else if (!user.equals(data.user)) {
         client.actions.UserUpdate.handle(data.user);
       }
@@ -29,7 +29,7 @@ class GuildMemberUpdateAction extends Action {
          */
         if (shard.status === Status.READY && !member.equals(old)) client.emit(Events.GUILD_MEMBER_UPDATE, old, member);
       } else {
-        const newMember = guild.members.add(data);
+        const newMember = guild.members._add(data);
         /**
          * Emitted whenever a member becomes available in a large guild.
          * @event Client#guildMemberAvailable
diff --git a/src/client/actions/GuildRoleCreate.js b/src/client/actions/GuildRoleCreate.js
index d7d521445..102e0f633 100644
--- a/src/client/actions/GuildRoleCreate.js
+++ b/src/client/actions/GuildRoleCreate.js
@@ -10,7 +10,7 @@ class GuildRoleCreate extends Action {
     let role;
     if (guild) {
       const already = guild.roles.cache.has(data.role.id);
-      role = guild.roles.add(data.role);
+      role = guild.roles._add(data.role);
       /**
        * Emitted whenever a role is created.
        * @event Client#roleCreate
diff --git a/src/client/actions/InviteCreate.js b/src/client/actions/InviteCreate.js
index 6aee0b95d..ec6088d3d 100644
--- a/src/client/actions/InviteCreate.js
+++ b/src/client/actions/InviteCreate.js
@@ -11,7 +11,7 @@ class InviteCreateAction extends Action {
     if (!channel) return false;
 
     const inviteData = Object.assign(data, { channel, guild });
-    const invite = guild.invites.add(inviteData);
+    const invite = guild.invites._add(inviteData);
 
     /**
      * Emitted when an invite is created.
diff --git a/src/client/actions/MessageCreate.js b/src/client/actions/MessageCreate.js
index 060f2a504..979a65cc8 100644
--- a/src/client/actions/MessageCreate.js
+++ b/src/client/actions/MessageCreate.js
@@ -12,7 +12,7 @@ class MessageCreateAction extends Action {
     if (channel) {
       const existing = channel.messages.cache.get(data.id);
       if (existing) return { message: existing };
-      const message = channel.messages.add(data);
+      const message = channel.messages._add(data);
       channel.lastMessageId = data.id;
 
       /**
diff --git a/src/client/actions/MessageReactionAdd.js b/src/client/actions/MessageReactionAdd.js
index 6107d5dd3..e483ff512 100644
--- a/src/client/actions/MessageReactionAdd.js
+++ b/src/client/actions/MessageReactionAdd.js
@@ -33,7 +33,7 @@ class MessageReactionAdd extends Action {
     if (message.partial && !this.client.options.partials.includes(PartialTypes.REACTION)) return false;
     const existing = message.reactions.cache.get(data.emoji.id ?? data.emoji.name);
     if (existing?.users.cache.has(user.id)) return { message, reaction: existing, user };
-    const reaction = message.reactions.add({
+    const reaction = message.reactions._add({
       emoji: data.emoji,
       count: message.partial ? null : 0,
       me: user.id === this.client.user.id,
diff --git a/src/client/actions/PresenceUpdate.js b/src/client/actions/PresenceUpdate.js
index 5eb29a610..3639ec3b4 100644
--- a/src/client/actions/PresenceUpdate.js
+++ b/src/client/actions/PresenceUpdate.js
@@ -6,7 +6,7 @@ const { Events } = require('../../util/Constants');
 class PresenceUpdateAction extends Action {
   handle(data) {
     let user = this.client.users.cache.get(data.user.id);
-    if (!user && data.user?.username) user = this.client.users.add(data.user);
+    if (!user && data.user?.username) user = this.client.users._add(data.user);
     if (!user) return;
 
     if (data.user?.username) {
@@ -19,14 +19,14 @@ class PresenceUpdateAction extends Action {
     const oldPresence = guild.presences.cache.get(user.id)?._clone() ?? null;
     let member = guild.members.cache.get(user.id);
     if (!member && data.status !== 'offline') {
-      member = guild.members.add({
+      member = guild.members._add({
         user,
         deaf: false,
         mute: false,
       });
       this.client.emit(Events.GUILD_MEMBER_AVAILABLE, member);
     }
-    guild.presences.add(Object.assign(data, { guild }));
+    guild.presences._add(Object.assign(data, { guild }));
     if (this.client.listenerCount(Events.PRESENCE_UPDATE) && member && !member.presence.equals(oldPresence)) {
       /**
        * Emitted whenever a guild member's presence (e.g. status, activity) is changed.
diff --git a/src/client/actions/StageInstanceCreate.js b/src/client/actions/StageInstanceCreate.js
index 75b94bdd3..bff459152 100644
--- a/src/client/actions/StageInstanceCreate.js
+++ b/src/client/actions/StageInstanceCreate.js
@@ -9,7 +9,7 @@ class StageInstanceCreateAction extends Action {
     const channel = this.getChannel(data);
 
     if (channel) {
-      const stageInstance = channel.guild.stageInstances.add(data);
+      const stageInstance = channel.guild.stageInstances._add(data);
 
       /**
        * Emitted whenever a stage instance is created.
diff --git a/src/client/actions/StageInstanceDelete.js b/src/client/actions/StageInstanceDelete.js
index b665996a3..01e948d9c 100644
--- a/src/client/actions/StageInstanceDelete.js
+++ b/src/client/actions/StageInstanceDelete.js
@@ -9,7 +9,7 @@ class StageInstanceDeleteAction extends Action {
     const channel = this.getChannel(data);
 
     if (channel) {
-      const stageInstance = channel.guild.stageInstances.add(data);
+      const stageInstance = channel.guild.stageInstances._add(data);
       if (stageInstance) {
         channel.guild.stageInstances.cache.delete(stageInstance.id);
         stageInstance.deleted = true;
diff --git a/src/client/actions/StageInstanceUpdate.js b/src/client/actions/StageInstanceUpdate.js
index a13788e41..17d74f951 100644
--- a/src/client/actions/StageInstanceUpdate.js
+++ b/src/client/actions/StageInstanceUpdate.js
@@ -10,7 +10,7 @@ class StageInstanceUpdateAction extends Action {
 
     if (channel) {
       const oldStageInstance = channel.guild.stageInstances.cache.get(data.id)?._clone() ?? null;
-      const newStageInstance = channel.guild.stageInstances.add(data);
+      const newStageInstance = channel.guild.stageInstances._add(data);
 
       /**
        * Emitted whenever a stage instance gets updated - e.g. change in topic or privacy level
diff --git a/src/client/actions/ThreadCreate.js b/src/client/actions/ThreadCreate.js
index a9a62c04d..f7c36e678 100644
--- a/src/client/actions/ThreadCreate.js
+++ b/src/client/actions/ThreadCreate.js
@@ -7,7 +7,7 @@ class ThreadCreateAction extends Action {
   handle(data) {
     const client = this.client;
     const existing = client.channels.cache.has(data.id);
-    const thread = client.channels.add(data);
+    const thread = client.channels._add(data);
     if (!existing && thread) {
       /**
        * Emitted whenever a thread is created or when the client user is added to a thread.
diff --git a/src/client/actions/ThreadDelete.js b/src/client/actions/ThreadDelete.js
index 67761d4bf..6a23f8e6d 100644
--- a/src/client/actions/ThreadDelete.js
+++ b/src/client/actions/ThreadDelete.js
@@ -9,7 +9,7 @@ class ThreadDeleteAction extends Action {
     const thread = client.channels.cache.get(data.id);
 
     if (thread) {
-      client.channels.remove(thread.id);
+      client.channels._remove(thread.id);
       thread.deleted = true;
       for (const message of thread.messages.cache.values()) {
         message.deleted = true;
diff --git a/src/client/actions/ThreadListSync.js b/src/client/actions/ThreadListSync.js
index 444e42bf4..fa1254078 100644
--- a/src/client/actions/ThreadListSync.js
+++ b/src/client/actions/ThreadListSync.js
@@ -23,7 +23,7 @@ class ThreadListSyncAction extends Action {
     }
 
     const syncedThreads = data.threads.reduce((coll, rawThread) => {
-      const thread = client.channels.add(rawThread);
+      const thread = client.channels._add(rawThread);
       return coll.set(thread.id, thread);
     }, new Collection());
 
@@ -50,7 +50,7 @@ class ThreadListSyncAction extends Action {
   removeStale(channel) {
     channel.threads?.cache.forEach(thread => {
       if (!thread.archived) {
-        this.client.channels.remove(thread.id);
+        this.client.channels._remove(thread.id);
       }
     });
   }
diff --git a/src/client/actions/VoiceStateUpdate.js b/src/client/actions/VoiceStateUpdate.js
index a01191a37..f750e048b 100644
--- a/src/client/actions/VoiceStateUpdate.js
+++ b/src/client/actions/VoiceStateUpdate.js
@@ -13,14 +13,14 @@ class VoiceStateUpdate extends Action {
       const oldState =
         guild.voiceStates.cache.get(data.user_id)?._clone() ?? new VoiceState(guild, { user_id: data.user_id });
 
-      const newState = guild.voiceStates.add(data);
+      const newState = guild.voiceStates._add(data);
 
       // Get the member
       let member = guild.members.cache.get(data.user_id);
       if (member && data.member) {
         member._patch(data.member);
       } else if (data.member?.user && data.member.joined_at) {
-        member = guild.members.add(data.member);
+        member = guild.members._add(data.member);
       }
 
       // Emit event
diff --git a/src/client/websocket/handlers/APPLICATION_COMMAND_CREATE.js b/src/client/websocket/handlers/APPLICATION_COMMAND_CREATE.js
index 9d7125a89..f81a2b520 100644
--- a/src/client/websocket/handlers/APPLICATION_COMMAND_CREATE.js
+++ b/src/client/websocket/handlers/APPLICATION_COMMAND_CREATE.js
@@ -8,9 +8,9 @@ module.exports = (client, { d: data }) => {
   if (data.guild_id) {
     const guild = client.guilds.cache.get(data.guild_id);
     if (!guild) return;
-    command = guild.commands.add(data);
+    command = guild.commands._add(data);
   } else {
-    command = client.application.commands.add(data);
+    command = client.application.commands._add(data);
   }
 
   /**
diff --git a/src/client/websocket/handlers/APPLICATION_COMMAND_DELETE.js b/src/client/websocket/handlers/APPLICATION_COMMAND_DELETE.js
index c0eb3008a..99cc93526 100644
--- a/src/client/websocket/handlers/APPLICATION_COMMAND_DELETE.js
+++ b/src/client/websocket/handlers/APPLICATION_COMMAND_DELETE.js
@@ -8,10 +8,10 @@ module.exports = (client, { d: data }) => {
   if (data.guild_id) {
     const guild = client.guilds.cache.get(data.guild_id);
     if (!guild) return;
-    command = guild.commands.add(data);
+    command = guild.commands._add(data);
     guild.commands.cache.delete(data.id);
   } else {
-    command = client.application.commands.add(data);
+    command = client.application.commands._add(data);
     client.application.commands.cache.delete(data.id);
   }
 
diff --git a/src/client/websocket/handlers/APPLICATION_COMMAND_UPDATE.js b/src/client/websocket/handlers/APPLICATION_COMMAND_UPDATE.js
index d2708eecf..252ed56fb 100644
--- a/src/client/websocket/handlers/APPLICATION_COMMAND_UPDATE.js
+++ b/src/client/websocket/handlers/APPLICATION_COMMAND_UPDATE.js
@@ -10,10 +10,10 @@ module.exports = (client, { d: data }) => {
     const guild = client.guilds.cache.get(data.guild_id);
     if (!guild) return;
     oldCommand = guild.commands.cache.get(data.id)?._clone() ?? null;
-    newCommand = guild.commands.add(data);
+    newCommand = guild.commands._add(data);
   } else {
     oldCommand = client.application.commands.cache.get(data.id)?._clone() ?? null;
-    newCommand = client.application.commands.add(data);
+    newCommand = client.application.commands._add(data);
   }
 
   /**
diff --git a/src/client/websocket/handlers/GUILD_CREATE.js b/src/client/websocket/handlers/GUILD_CREATE.js
index 02e449f0e..acff7c285 100644
--- a/src/client/websocket/handlers/GUILD_CREATE.js
+++ b/src/client/websocket/handlers/GUILD_CREATE.js
@@ -12,7 +12,7 @@ module.exports = (client, { d: data }, shard) => {
   } else {
     // A new guild
     data.shardId = shard.id;
-    guild = client.guilds.add(data);
+    guild = client.guilds._add(data);
     if (client.ws.status === Status.READY) {
       /**
        * Emitted whenever the client joins a guild.
diff --git a/src/client/websocket/handlers/GUILD_MEMBERS_CHUNK.js b/src/client/websocket/handlers/GUILD_MEMBERS_CHUNK.js
index 2a04c68b1..1e4c3e267 100644
--- a/src/client/websocket/handlers/GUILD_MEMBERS_CHUNK.js
+++ b/src/client/websocket/handlers/GUILD_MEMBERS_CHUNK.js
@@ -8,9 +8,9 @@ module.exports = (client, { d: data }) => {
   if (!guild) return;
   const members = new Collection();
 
-  for (const member of data.members) members.set(member.user.id, guild.members.add(member));
+  for (const member of data.members) members.set(member.user.id, guild.members._add(member));
   if (data.presences) {
-    for (const presence of data.presences) guild.presences.add(Object.assign(presence, { guild }));
+    for (const presence of data.presences) guild.presences._add(Object.assign(presence, { guild }));
   }
   /**
    * Emitted whenever a chunk of guild members is received (all members come from the same guild).
diff --git a/src/client/websocket/handlers/GUILD_MEMBER_ADD.js b/src/client/websocket/handlers/GUILD_MEMBER_ADD.js
index 512875621..67590db20 100644
--- a/src/client/websocket/handlers/GUILD_MEMBER_ADD.js
+++ b/src/client/websocket/handlers/GUILD_MEMBER_ADD.js
@@ -6,7 +6,7 @@ module.exports = (client, { d: data }, shard) => {
   const guild = client.guilds.cache.get(data.guild_id);
   if (guild) {
     guild.memberCount++;
-    const member = guild.members.add(data);
+    const member = guild.members._add(data);
     if (shard.status === Status.READY) {
       /**
        * Emitted whenever a user joins a guild.
diff --git a/src/client/websocket/handlers/READY.js b/src/client/websocket/handlers/READY.js
index f81bc7fd3..408bfa732 100644
--- a/src/client/websocket/handlers/READY.js
+++ b/src/client/websocket/handlers/READY.js
@@ -14,7 +14,7 @@ module.exports = (client, { d: data }, shard) => {
 
   for (const guild of data.guilds) {
     guild.shardId = shard.id;
-    client.guilds.add(guild);
+    client.guilds._add(guild);
   }
 
   if (client.application) {
diff --git a/src/managers/ApplicationCommandManager.js b/src/managers/ApplicationCommandManager.js
index 1ed20a670..7b7c8dc70 100644
--- a/src/managers/ApplicationCommandManager.js
+++ b/src/managers/ApplicationCommandManager.js
@@ -27,8 +27,8 @@ class ApplicationCommandManager extends CachedManager {
    * @name ApplicationCommandManager#cache
    */
 
-  add(data, cache, guildId) {
-    return super.add(data, cache, { extras: [this.guild, guildId] });
+  _add(data, cache, guildId) {
+    return super._add(data, cache, { extras: [this.guild, guildId] });
   }
 
   /**
@@ -90,11 +90,11 @@ class ApplicationCommandManager extends CachedManager {
         if (existing) return existing;
       }
       const command = await this.commandPath({ id, guildId }).get();
-      return this.add(command, cache);
+      return this._add(command, cache);
     }
 
     const data = await this.commandPath({ guildId }).get();
-    return data.reduce((coll, command) => coll.set(command.id, this.add(command, cache, guildId)), new Collection());
+    return data.reduce((coll, command) => coll.set(command.id, this._add(command, cache, guildId)), new Collection());
   }
 
   /**
@@ -116,7 +116,7 @@ class ApplicationCommandManager extends CachedManager {
     const data = await this.commandPath({ guildId }).post({
       data: this.constructor.transformCommand(command),
     });
-    return this.add(data, undefined, guildId);
+    return this._add(data, undefined, guildId);
   }
 
   /**
@@ -146,7 +146,7 @@ class ApplicationCommandManager extends CachedManager {
       data: commands.map(c => this.constructor.transformCommand(c)),
     });
     return data.reduce(
-      (coll, command) => coll.set(command.id, this.add(command, undefined, guildId)),
+      (coll, command) => coll.set(command.id, this._add(command, undefined, guildId)),
       new Collection(),
     );
   }
@@ -171,7 +171,7 @@ class ApplicationCommandManager extends CachedManager {
     if (!id) throw new TypeError('INVALID_TYPE', 'command', 'ApplicationCommandResolvable');
 
     const patched = await this.commandPath({ id, guildId }).patch({ data: this.constructor.transformCommand(data) });
-    return this.add(patched, undefined, guildId);
+    return this._add(patched, undefined, guildId);
   }
 
   /**
diff --git a/src/managers/CachedManager.js b/src/managers/CachedManager.js
index 78ecfc6e1..1a3856853 100644
--- a/src/managers/CachedManager.js
+++ b/src/managers/CachedManager.js
@@ -15,7 +15,7 @@ class CachedManager extends DataManager {
 
     if (iterable) {
       for (const item of iterable) {
-        this.add(item);
+        this._add(item);
       }
     }
   }
@@ -29,7 +29,7 @@ class CachedManager extends DataManager {
     return this._cache;
   }
 
-  add(data, cache = true, { id, extras = [] } = {}) {
+  _add(data, cache = true, { id, extras = [] } = {}) {
     const existing = this.cache.get(id ?? data.id);
     if (cache) existing?._patch(data);
     if (existing) return existing;
diff --git a/src/managers/ChannelManager.js b/src/managers/ChannelManager.js
index e28af76c6..4de961bc2 100644
--- a/src/managers/ChannelManager.js
+++ b/src/managers/ChannelManager.js
@@ -19,13 +19,13 @@ class ChannelManager extends CachedManager {
    * @name ChannelManager#cache
    */
 
-  add(data, guild, cache = true, allowUnknownGuild = false) {
+  _add(data, guild, cache = true, allowUnknownGuild = false) {
     const existing = this.cache.get(data.id);
     if (existing) {
       if (cache) existing._patch(data);
-      guild?.channels?.add(existing);
+      guild?.channels?._add(existing);
       if (ThreadChannelTypes.includes(existing.type)) {
-        existing.parent?.threads?.add(existing);
+        existing.parent?.threads?._add(existing);
       }
       return existing;
     }
@@ -42,7 +42,7 @@ class ChannelManager extends CachedManager {
     return channel;
   }
 
-  remove(id) {
+  _remove(id) {
     const channel = this.cache.get(id);
     channel?.guild?.channels.cache.delete(id);
     channel?.parent?.threads?.cache.delete(id);
@@ -99,7 +99,7 @@ class ChannelManager extends CachedManager {
     }
 
     const data = await this.client.api.channels(id).get();
-    return this.add(data, null, cache, allowUnknownGuild);
+    return this._add(data, null, cache, allowUnknownGuild);
   }
 }
 
diff --git a/src/managers/GuildBanManager.js b/src/managers/GuildBanManager.js
index 9b05c4b79..fcedc71fe 100644
--- a/src/managers/GuildBanManager.js
+++ b/src/managers/GuildBanManager.js
@@ -27,8 +27,8 @@ class GuildBanManager extends CachedManager {
    * @name GuildBanManager#cache
    */
 
-  add(data, cache) {
-    return super.add(data, cache, { id: data.user.id, extras: [this.guild] });
+  _add(data, cache) {
+    return super._add(data, cache, { id: data.user.id, extras: [this.guild] });
   }
 
   /**
@@ -110,12 +110,12 @@ class GuildBanManager extends CachedManager {
     }
 
     const data = await this.client.api.guilds(this.guild.id).bans(user).get();
-    return this.add(data, cache);
+    return this._add(data, cache);
   }
 
   async _fetchMany(cache) {
     const data = await this.client.api.guilds(this.guild.id).bans.get();
-    return data.reduce((col, ban) => col.set(ban.user.id, this.add(ban, cache)), new Collection());
+    return data.reduce((col, ban) => col.set(ban.user.id, this._add(ban, cache)), new Collection());
   }
 
   /**
diff --git a/src/managers/GuildChannelManager.js b/src/managers/GuildChannelManager.js
index 62c8102fc..be5ea0531 100644
--- a/src/managers/GuildChannelManager.js
+++ b/src/managers/GuildChannelManager.js
@@ -42,7 +42,7 @@ class GuildChannelManager extends CachedManager {
    * @name GuildChannelManager#cache
    */
 
-  add(channel) {
+  _add(channel) {
     const existing = this.cache.get(channel.id);
     if (existing) return existing;
     this.cache.set(channel.id, channel);
@@ -169,12 +169,12 @@ class GuildChannelManager extends CachedManager {
       const data = await this.client.api.channels(id).get();
       // Since this is the guild manager, throw if on a different guild
       if (this.guild.id !== data.guild_id) throw new Error('GUILD_CHANNEL_UNOWNED');
-      return this.client.channels.add(data, this.guild, cache);
+      return this.client.channels._add(data, this.guild, cache);
     }
 
     const data = await this.client.api.guilds(this.guild.id).channels.get();
     const channels = new Collection();
-    for (const channel of data) channels.set(channel.id, this.client.channels.add(channel, this.guild, cache));
+    for (const channel of data) channels.set(channel.id, this.client.channels._add(channel, this.guild, cache));
     return channels;
   }
 }
diff --git a/src/managers/GuildEmojiManager.js b/src/managers/GuildEmojiManager.js
index f64c4d71a..bffb09ef8 100644
--- a/src/managers/GuildEmojiManager.js
+++ b/src/managers/GuildEmojiManager.js
@@ -20,8 +20,8 @@ class GuildEmojiManager extends BaseGuildEmojiManager {
     this.guild = guild;
   }
 
-  add(data, cache) {
-    return super.add(data, cache, { extras: [this.guild] });
+  _add(data, cache) {
+    return super._add(data, cache, { extras: [this.guild] });
   }
 
   /**
@@ -94,12 +94,12 @@ class GuildEmojiManager extends BaseGuildEmojiManager {
         if (existing) return existing;
       }
       const emoji = await this.client.api.guilds(this.guild.id).emojis(id).get();
-      return this.add(emoji, cache);
+      return this._add(emoji, cache);
     }
 
     const data = await this.client.api.guilds(this.guild.id).emojis.get();
     const emojis = new Collection();
-    for (const emoji of data) emojis.set(emoji.id, this.add(emoji, cache));
+    for (const emoji of data) emojis.set(emoji.id, this._add(emoji, cache));
     return emojis;
   }
 }
diff --git a/src/managers/GuildInviteManager.js b/src/managers/GuildInviteManager.js
index 45cd05547..ea4f1dccb 100644
--- a/src/managers/GuildInviteManager.js
+++ b/src/managers/GuildInviteManager.js
@@ -27,8 +27,8 @@ class GuildInviteManager extends CachedManager {
    * @name GuildInviteManager#cache
    */
 
-  add(data, cache) {
-    return super.add(data, cache, { id: data.code, extras: [this.guild] });
+  _add(data, cache) {
+    return super._add(data, cache, { id: data.code, extras: [this.guild] });
   }
 
   /**
@@ -142,12 +142,12 @@ class GuildInviteManager extends CachedManager {
 
   async _fetchMany(cache) {
     const data = await this.client.api.guilds(this.guild.id).invites.get();
-    return data.reduce((col, invite) => col.set(invite.code, this.add(invite, cache)), new Collection());
+    return data.reduce((col, invite) => col.set(invite.code, this._add(invite, cache)), new Collection());
   }
 
   async _fetchChannelMany(channelID, cache) {
     const data = await this.client.api.channels(channelID).invites.get();
-    return data.reduce((col, invite) => col.set(invite.code, this.add(invite, cache)), new Collection());
+    return data.reduce((col, invite) => col.set(invite.code, this._add(invite, cache)), new Collection());
   }
 
   /**
diff --git a/src/managers/GuildManager.js b/src/managers/GuildManager.js
index 1914ad7c2..39f77034b 100644
--- a/src/managers/GuildManager.js
+++ b/src/managers/GuildManager.js
@@ -229,7 +229,7 @@ class GuildManager extends CachedManager {
           const timeout = this.client.setTimeout(() => {
             this.client.removeListener(Events.GUILD_CREATE, handleGuild);
             this.client.decrementMaxListeners();
-            resolve(this.client.guilds.add(data));
+            resolve(this.client.guilds._add(data));
           }, 10000);
           return undefined;
         }, reject),
@@ -265,7 +265,7 @@ class GuildManager extends CachedManager {
       }
 
       const data = await this.client.api.guilds(id).get({ query: { with_counts: true } });
-      return this.add(data, options.cache);
+      return this._add(data, options.cache);
     }
 
     const data = await this.client.api.users('@me').guilds.get({ query: options });
diff --git a/src/managers/GuildMemberManager.js b/src/managers/GuildMemberManager.js
index a56e9e3f8..1c923f468 100644
--- a/src/managers/GuildMemberManager.js
+++ b/src/managers/GuildMemberManager.js
@@ -30,8 +30,8 @@ class GuildMemberManager extends CachedManager {
    * @name GuildMemberManager#cache
    */
 
-  add(data, cache = true) {
-    return super.add(data, cache, { id: data.user.id, extras: [this.guild] });
+  _add(data, cache = true) {
+    return super._add(data, cache, { id: data.user.id, extras: [this.guild] });
   }
 
   /**
@@ -152,7 +152,7 @@ class GuildMemberManager extends CachedManager {
    */
   async search({ query, limit = 1, cache = true } = {}) {
     const data = await this.client.api.guilds(this.guild.id).members.search.get({ query: { query, limit } });
-    return data.reduce((col, member) => col.set(member.user.id, this.add(member, cache)), new Collection());
+    return data.reduce((col, member) => col.set(member.user.id, this._add(member, cache)), new Collection());
   }
 
   /**
@@ -193,7 +193,7 @@ class GuildMemberManager extends CachedManager {
 
     const clone = this.cache.get(id)?._clone();
     clone?._patch(d);
-    return clone ?? this.add(d, false);
+    return clone ?? this._add(d, false);
   }
 
   /**
@@ -326,7 +326,7 @@ class GuildMemberManager extends CachedManager {
       .guilds(this.guild.id)
       .members(user)
       .get()
-      .then(data => this.add(data, cache));
+      .then(data => this._add(data, cache));
   }
 
   _fetchMany({
diff --git a/src/managers/MessageManager.js b/src/managers/MessageManager.js
index 0c5bad26b..e36de7c9d 100644
--- a/src/managers/MessageManager.js
+++ b/src/managers/MessageManager.js
@@ -27,8 +27,8 @@ class MessageManager extends CachedManager {
    * @name MessageManager#cache
    */
 
-  add(data, cache) {
-    return super.add(data, cache, { extras: [this.channel] });
+  _add(data, cache) {
+    return super._add(data, cache, { extras: [this.channel] });
   }
 
   /**
@@ -83,7 +83,7 @@ class MessageManager extends CachedManager {
   fetchPinned(cache = true) {
     return this.client.api.channels[this.channel.id].pins.get().then(data => {
       const messages = new Collection();
-      for (const message of data) messages.set(message.id, this.add(message, cache));
+      for (const message of data) messages.set(message.id, this._add(message, cache));
       return messages;
     });
   }
@@ -137,7 +137,7 @@ class MessageManager extends CachedManager {
       clone._patch(d);
       return clone;
     }
-    return this.add(d);
+    return this._add(d);
   }
 
   /**
@@ -150,7 +150,7 @@ class MessageManager extends CachedManager {
     if (!message) throw new TypeError('INVALID_TYPE', 'message', 'MessageResolvable');
 
     const data = await this.client.api.channels(this.channel.id).messages(message).crosspost.post();
-    return this.cache.get(data.id) ?? this.add(data);
+    return this.cache.get(data.id) ?? this._add(data);
   }
 
   /**
@@ -213,13 +213,13 @@ class MessageManager extends CachedManager {
     }
 
     const data = await this.client.api.channels[this.channel.id].messages[messageId].get();
-    return this.add(data, cache);
+    return this._add(data, cache);
   }
 
   async _fetchMany(options = {}, cache) {
     const data = await this.client.api.channels[this.channel.id].messages.get({ query: options });
     const messages = new Collection();
-    for (const message of data) messages.set(message.id, this.add(message, cache));
+    for (const message of data) messages.set(message.id, this._add(message, cache));
     return messages;
   }
 }
diff --git a/src/managers/PermissionOverwriteManager.js b/src/managers/PermissionOverwriteManager.js
index 8d6cd127b..91c3e03ce 100644
--- a/src/managers/PermissionOverwriteManager.js
+++ b/src/managers/PermissionOverwriteManager.js
@@ -28,8 +28,8 @@ class PermissionOverwriteManager extends CachedManager {
    * @name PermissionOverwriteManager#cache
    */
 
-  add(data, cache) {
-    return super.add(data, cache, { extras: [this.channel] });
+  _add(data, cache) {
+    return super._add(data, cache, { extras: [this.channel] });
   }
 
   /**
diff --git a/src/managers/PresenceManager.js b/src/managers/PresenceManager.js
index bd342bc81..2d6483425 100644
--- a/src/managers/PresenceManager.js
+++ b/src/managers/PresenceManager.js
@@ -18,8 +18,8 @@ class PresenceManager extends CachedManager {
    * @name PresenceManager#cache
    */
 
-  add(data, cache) {
-    return super.add(data, cache, { id: data.user.id });
+  _add(data, cache) {
+    return super._add(data, cache, { id: data.user.id });
   }
 
   /**
diff --git a/src/managers/ReactionManager.js b/src/managers/ReactionManager.js
index 2a325c2e5..771e05416 100644
--- a/src/managers/ReactionManager.js
+++ b/src/managers/ReactionManager.js
@@ -18,8 +18,8 @@ class ReactionManager extends CachedManager {
     this.message = message;
   }
 
-  add(data, cache) {
-    return super.add(data, cache, { id: data.emoji.id ?? data.emoji.name, extras: [this.message] });
+  _add(data, cache) {
+    return super._add(data, cache, { id: data.emoji.id ?? data.emoji.name, extras: [this.message] });
   }
 
   /**
diff --git a/src/managers/ReactionUserManager.js b/src/managers/ReactionUserManager.js
index f1bbab696..403c1df42 100644
--- a/src/managers/ReactionUserManager.js
+++ b/src/managers/ReactionUserManager.js
@@ -45,7 +45,7 @@ class ReactionUserManager extends CachedManager {
     ].get({ query: { limit, after } });
     const users = new Collection();
     for (const rawUser of data) {
-      const user = this.client.users.add(rawUser);
+      const user = this.client.users._add(rawUser);
       this.cache.set(user.id, user);
       users.set(user.id, user);
     }
diff --git a/src/managers/RoleManager.js b/src/managers/RoleManager.js
index 9b68ba9ed..a92cbb334 100644
--- a/src/managers/RoleManager.js
+++ b/src/managers/RoleManager.js
@@ -28,8 +28,8 @@ class RoleManager extends CachedManager {
    * @name RoleManager#cache
    */
 
-  add(data, cache) {
-    return super.add(data, cache, { extras: [this.guild] });
+  _add(data, cache) {
+    return super._add(data, cache, { extras: [this.guild] });
   }
 
   /**
@@ -57,7 +57,7 @@ class RoleManager extends CachedManager {
     // We cannot fetch a single role, as of this commit's date, Discord API throws with 405
     const data = await this.client.api.guilds(this.guild.id).roles.get();
     const roles = new Collection();
-    for (const role of data) roles.set(role.id, this.add(role, cache));
+    for (const role of data) roles.set(role.id, this._add(role, cache));
     return id ? roles.get(id) ?? null : roles;
   }
 
diff --git a/src/managers/StageInstanceManager.js b/src/managers/StageInstanceManager.js
index da55260d8..d3684a9a6 100644
--- a/src/managers/StageInstanceManager.js
+++ b/src/managers/StageInstanceManager.js
@@ -63,7 +63,7 @@ class StageInstanceManager extends CachedManager {
       },
     });
 
-    return this.add(data);
+    return this._add(data);
   }
 
   /**
@@ -87,7 +87,7 @@ class StageInstanceManager extends CachedManager {
     }
 
     const data = await this.client.api('stage-instances', channelId).get();
-    return this.add(data, cache);
+    return this._add(data, cache);
   }
 
   /**
@@ -130,7 +130,7 @@ class StageInstanceManager extends CachedManager {
       return clone;
     }
 
-    return this.add(data);
+    return this._add(data);
   }
 
   /**
diff --git a/src/managers/ThreadManager.js b/src/managers/ThreadManager.js
index afa2d4b1b..2e334f051 100644
--- a/src/managers/ThreadManager.js
+++ b/src/managers/ThreadManager.js
@@ -27,7 +27,7 @@ class ThreadManager extends CachedManager {
    * @name ThreadManager#cache
    */
 
-  add(thread) {
+  _add(thread) {
     const existing = this.cache.get(thread.id);
     if (existing) return existing;
     this.cache.set(thread.id, thread);
@@ -234,7 +234,7 @@ class ThreadManager extends CachedManager {
 
   _mapThreads(rawThreads, cache) {
     const threads = rawThreads.threads.reduce((coll, raw) => {
-      const thread = this.client.channels.add(raw, null, cache);
+      const thread = this.client.channels._add(raw, null, cache);
       return coll.set(thread.id, thread);
     }, new Collection());
     // Discord sends the thread id as id in this object
diff --git a/src/managers/UserManager.js b/src/managers/UserManager.js
index 118a3712b..dfbba9e89 100644
--- a/src/managers/UserManager.js
+++ b/src/managers/UserManager.js
@@ -67,7 +67,7 @@ class UserManager extends CachedManager {
     }
 
     const data = await this.client.api.users(id).get();
-    return this.add(data, cache);
+    return this._add(data, cache);
   }
 }
 
diff --git a/src/managers/VoiceStateManager.js b/src/managers/VoiceStateManager.js
index d33c5ba72..c42fdd2c3 100644
--- a/src/managers/VoiceStateManager.js
+++ b/src/managers/VoiceStateManager.js
@@ -24,7 +24,7 @@ class VoiceStateManager extends CachedManager {
    * @name VoiceStateManager#cache
    */
 
-  add(data, cache = true) {
+  _add(data, cache = true) {
     const existing = this.cache.get(data.user_id);
     if (existing) return existing._patch(data);
 
diff --git a/src/structures/BaseGuild.js b/src/structures/BaseGuild.js
index 963d8c6c0..05e029bb7 100644
--- a/src/structures/BaseGuild.js
+++ b/src/structures/BaseGuild.js
@@ -101,7 +101,7 @@ class BaseGuild extends Base {
    */
   async fetch() {
     const data = await this.client.api.guilds(this.id).get({ query: { with_counts: true } });
-    return this.client.guilds.add(data);
+    return this.client.guilds._add(data);
   }
 
   /**
diff --git a/src/structures/ClientApplication.js b/src/structures/ClientApplication.js
index 5c9e1a4c2..4eb95a6c4 100644
--- a/src/structures/ClientApplication.js
+++ b/src/structures/ClientApplication.js
@@ -60,7 +60,7 @@ class ClientApplication extends Application {
     this.owner = data.team
       ? new Team(this.client, data.team)
       : data.owner
-      ? this.client.users.add(data.owner)
+      ? this.client.users._add(data.owner)
       : this.owner ?? null;
   }
 
diff --git a/src/structures/CommandInteraction.js b/src/structures/CommandInteraction.js
index 7eb6c7290..f2504a295 100644
--- a/src/structures/CommandInteraction.js
+++ b/src/structures/CommandInteraction.js
@@ -112,16 +112,16 @@ class CommandInteraction extends Interaction {
 
     if (resolved) {
       const user = resolved.users?.[option.value];
-      if (user) result.user = this.client.users.add(user);
+      if (user) result.user = this.client.users._add(user);
 
       const member = resolved.members?.[option.value];
-      if (member) result.member = this.guild?.members.add({ user, ...member }) ?? member;
+      if (member) result.member = this.guild?.members._add({ user, ...member }) ?? member;
 
       const channel = resolved.channels?.[option.value];
-      if (channel) result.channel = this.client.channels.add(channel, this.guild) ?? channel;
+      if (channel) result.channel = this.client.channels._add(channel, this.guild) ?? channel;
 
       const role = resolved.roles?.[option.value];
-      if (role) result.role = this.guild?.roles.add(role) ?? role;
+      if (role) result.role = this.guild?.roles._add(role) ?? role;
     }
 
     return result;
diff --git a/src/structures/DMChannel.js b/src/structures/DMChannel.js
index 5fff4c11b..f4b635eff 100644
--- a/src/structures/DMChannel.js
+++ b/src/structures/DMChannel.js
@@ -34,7 +34,7 @@ class DMChannel extends Channel {
        * The recipient on the other end of the DM
        * @type {User}
        */
-      this.recipient = this.client.users.add(data.recipients[0]);
+      this.recipient = this.client.users._add(data.recipients[0]);
     }
 
     /**
diff --git a/src/structures/Guild.js b/src/structures/Guild.js
index 6f1dcf1e8..57b1e5d00 100644
--- a/src/structures/Guild.js
+++ b/src/structures/Guild.js
@@ -343,24 +343,24 @@ class Guild extends AnonymousGuild {
     if (data.channels) {
       this.channels.cache.clear();
       for (const rawChannel of data.channels) {
-        this.client.channels.add(rawChannel, this);
+        this.client.channels._add(rawChannel, this);
       }
     }
 
     if (data.threads) {
       for (const rawThread of data.threads) {
-        this.client.channels.add(rawThread, this);
+        this.client.channels._add(rawThread, this);
       }
     }
 
     if (data.roles) {
       this.roles.cache.clear();
-      for (const role of data.roles) this.roles.add(role);
+      for (const role of data.roles) this.roles._add(role);
     }
 
     if (data.members) {
       this.members.cache.clear();
-      for (const guildUser of data.members) this.members.add(guildUser);
+      for (const guildUser of data.members) this.members._add(guildUser);
     }
 
     if (data.owner_id) {
@@ -373,21 +373,21 @@ class Guild extends AnonymousGuild {
 
     if (data.presences) {
       for (const presence of data.presences) {
-        this.presences.add(Object.assign(presence, { guild: this }));
+        this.presences._add(Object.assign(presence, { guild: this }));
       }
     }
 
     if (data.stage_instances) {
       this.stageInstances.cache.clear();
       for (const stageInstance of data.stage_instances) {
-        this.stageInstances.add(stageInstance);
+        this.stageInstances._add(stageInstance);
       }
     }
 
     if (data.voice_states) {
       this.voiceStates.cache.clear();
       for (const voiceState of data.voice_states) {
-        this.voiceStates.add(voiceState);
+        this.voiceStates._add(voiceState);
       }
     }
 
@@ -397,7 +397,7 @@ class Guild extends AnonymousGuild {
        * @type {GuildEmojiManager}
        */
       this.emojis = new GuildEmojiManager(this);
-      if (data.emojis) for (const emoji of data.emojis) this.emojis.add(emoji);
+      if (data.emojis) for (const emoji of data.emojis) this.emojis._add(emoji);
     } else if (data.emojis) {
       this.client.actions.GuildEmojisUpdate.handle({
         guild_id: this.id,
@@ -513,7 +513,7 @@ class Guild extends AnonymousGuild {
     return (
       this.members.resolve(this.client.user.id) ??
       (this.client.options.partials.includes(PartialTypes.GUILD_MEMBER)
-        ? this.members.add({ user: { id: this.client.user.id } }, true)
+        ? this.members._add({ user: { id: this.client.user.id } }, true)
         : null)
     );
   }
@@ -759,7 +759,7 @@ class Guild extends AnonymousGuild {
     }
     const data = await this.client.api.guilds(this.id).members(user).put({ data: options });
     // Data is an empty buffer if the member is already part of the guild.
-    return data instanceof Buffer ? this.members.fetch(user) : this.members.add(data);
+    return data instanceof Buffer ? this.members.fetch(user) : this.members._add(data);
   }
 
   /**
diff --git a/src/structures/GuildAuditLogs.js b/src/structures/GuildAuditLogs.js
index 6680af2ce..7fefa09fc 100644
--- a/src/structures/GuildAuditLogs.js
+++ b/src/structures/GuildAuditLogs.js
@@ -140,7 +140,7 @@ const Actions = {
  */
 class GuildAuditLogs {
   constructor(guild, data) {
-    if (data.users) for (const user of data.users) guild.client.users.add(user);
+    if (data.users) for (const user of data.users) guild.client.users._add(user);
     /**
      * Cached webhooks
      * @type {Collection<Snowflake, Webhook>}
@@ -340,7 +340,7 @@ class GuildAuditLogsEntry {
      */
     this.executor = data.user_id
       ? guild.client.options.partials.includes(PartialTypes.USER)
-        ? guild.client.users.add({ id: data.user_id })
+        ? guild.client.users._add({ id: data.user_id })
         : guild.client.users.cache.get(data.user_id)
       : null;
 
@@ -450,7 +450,7 @@ class GuildAuditLogsEntry {
       // MEMBER_DISCONNECT and similar types do not provide a target_id.
     } else if (targetType === Targets.USER && data.target_id) {
       this.target = guild.client.options.partials.includes(PartialTypes.USER)
-        ? guild.client.users.add({ id: data.target_id })
+        ? guild.client.users._add({ id: data.target_id })
         : guild.client.users.cache.get(data.target_id);
     } else if (targetType === Targets.GUILD) {
       this.target = guild.client.guilds.cache.get(data.target_id);
diff --git a/src/structures/GuildBan.js b/src/structures/GuildBan.js
index 9a14d4de8..b40e7c3ac 100644
--- a/src/structures/GuildBan.js
+++ b/src/structures/GuildBan.js
@@ -29,7 +29,7 @@ class GuildBan extends Base {
      * The user this ban applies to
      * @type {User}
      */
-    this.user = this.client.users.add(data.user, true);
+    this.user = this.client.users._add(data.user, true);
 
     if ('reason' in data) {
       /**
diff --git a/src/structures/GuildChannel.js b/src/structures/GuildChannel.js
index 598b6c6fa..e97962e3a 100644
--- a/src/structures/GuildChannel.js
+++ b/src/structures/GuildChannel.js
@@ -85,7 +85,7 @@ class GuildChannel extends Channel {
     if ('permission_overwrites' in data) {
       this.permissionOverwrites.cache.clear();
       for (const overwrite of data.permission_overwrites) {
-        this.permissionOverwrites.add(overwrite);
+        this.permissionOverwrites._add(overwrite);
       }
     }
   }
diff --git a/src/structures/GuildEmoji.js b/src/structures/GuildEmoji.js
index dc586a1e9..0359abebb 100644
--- a/src/structures/GuildEmoji.js
+++ b/src/structures/GuildEmoji.js
@@ -48,7 +48,7 @@ class GuildEmoji extends BaseGuildEmoji {
   _patch(data) {
     super._patch(data);
 
-    if (data.user) this.author = this.client.users.add(data.user);
+    if (data.user) this.author = this.client.users._add(data.user);
     if (data.roles) this._roles = data.roles;
   }
 
diff --git a/src/structures/GuildMember.js b/src/structures/GuildMember.js
index c097b7b15..b640c904a 100644
--- a/src/structures/GuildMember.js
+++ b/src/structures/GuildMember.js
@@ -67,7 +67,7 @@ class GuildMember extends Base {
        * The user that this guild member instance represents
        * @type {User}
        */
-      this.user = this.client.users.add(data.user, true);
+      this.user = this.client.users._add(data.user, true);
     }
 
     if ('nick' in data) this.nickname = data.nick;
diff --git a/src/structures/GuildTemplate.js b/src/structures/GuildTemplate.js
index 123fa18bd..6697e535d 100644
--- a/src/structures/GuildTemplate.js
+++ b/src/structures/GuildTemplate.js
@@ -59,7 +59,7 @@ class GuildTemplate extends Base {
      * The user that created this template
      * @type {User}
      */
-    this.creator = this.client.users.add(data.creator);
+    this.creator = this.client.users._add(data.creator);
 
     /**
      * The time of when this template was created at
@@ -130,7 +130,7 @@ class GuildTemplate extends Base {
       client.incrementMaxListeners();
       client.on(Events.GUILD_CREATE, handleGuild);
 
-      const timeout = client.setTimeout(() => resolveGuild(client.guilds.add(data)), 10000);
+      const timeout = client.setTimeout(() => resolveGuild(client.guilds._add(data)), 10000);
     });
   }
 
diff --git a/src/structures/Integration.js b/src/structures/Integration.js
index 74ef3bb73..4adb0dc9e 100644
--- a/src/structures/Integration.js
+++ b/src/structures/Integration.js
@@ -64,7 +64,7 @@ class Integration extends Base {
        * The user for this integration
        * @type {?User}
        */
-      this.user = this.client.users.add(data.user);
+      this.user = this.client.users._add(data.user);
     } else {
       this.user = null;
     }
diff --git a/src/structures/IntegrationApplication.js b/src/structures/IntegrationApplication.js
index 93dc88f52..d9a6d3946 100644
--- a/src/structures/IntegrationApplication.js
+++ b/src/structures/IntegrationApplication.js
@@ -14,7 +14,7 @@ class IntegrationApplication extends Application {
      * The bot user for this application
      * @type {?User}
      */
-    this.bot = data.bot ? this.client.users.add(data.bot) : this.bot ?? null;
+    this.bot = data.bot ? this.client.users._add(data.bot) : this.bot ?? null;
 
     /**
      * The url of the application's terms of service
diff --git a/src/structures/Interaction.js b/src/structures/Interaction.js
index 56f301677..47e7502fa 100644
--- a/src/structures/Interaction.js
+++ b/src/structures/Interaction.js
@@ -54,13 +54,13 @@ class Interaction extends Base {
      * The user which sent this interaction
      * @type {User}
      */
-    this.user = this.client.users.add(data.user ?? data.member.user);
+    this.user = this.client.users._add(data.user ?? data.member.user);
 
     /**
      * If this interaction was sent in a guild, the member which sent it
      * @type {?(GuildMember|APIGuildMember)}
      */
-    this.member = data.member ? this.guild?.members.add(data.member) ?? data.member : null;
+    this.member = data.member ? this.guild?.members._add(data.member) ?? data.member : null;
 
     /**
      * The version
diff --git a/src/structures/Invite.js b/src/structures/Invite.js
index 4aac077ae..f325eceef 100644
--- a/src/structures/Invite.js
+++ b/src/structures/Invite.js
@@ -76,13 +76,13 @@ class Invite extends Base {
      * The user who created this invite
      * @type {?User}
      */
-    this.inviter = data.inviter ? this.client.users.add(data.inviter) : null;
+    this.inviter = data.inviter ? this.client.users._add(data.inviter) : null;
 
     /**
      * The user whose stream to display for this voice channel stream invite
      * @type {?User}
      */
-    this.targetUser = data.target_user ? this.client.users.add(data.target_user) : null;
+    this.targetUser = data.target_user ? this.client.users._add(data.target_user) : null;
 
     /**
      * The embedded application to open for this voice channel embedded application invite
@@ -109,7 +109,7 @@ class Invite extends Base {
      * The channel the invite is for
      * @type {Channel}
      */
-    this.channel = this.client.channels.add(data.channel, this.guild, false);
+    this.channel = this.client.channels._add(data.channel, this.guild, false);
 
     /**
      * The timestamp the invite was created at
diff --git a/src/structures/InviteStageInstance.js b/src/structures/InviteStageInstance.js
index bb94ca6e1..6787e6fee 100644
--- a/src/structures/InviteStageInstance.js
+++ b/src/structures/InviteStageInstance.js
@@ -53,7 +53,7 @@ class InviteStageInstance extends Base {
 
     this.members.clear();
     for (const rawMember of data.members) {
-      const member = this.guild.members.add(rawMember);
+      const member = this.guild.members._add(rawMember);
       this.members.set(member.id, member);
     }
   }
diff --git a/src/structures/Message.js b/src/structures/Message.js
index 4ba63f9da..cdd8b7cd6 100644
--- a/src/structures/Message.js
+++ b/src/structures/Message.js
@@ -86,7 +86,7 @@ class Message extends Base {
        * The author of the message
        * @type {?User}
        */
-      this.author = this.client.users.add(data.author, !data.webhook_id);
+      this.author = this.client.users._add(data.author, !data.webhook_id);
     } else if (!this.author) {
       this.author = null;
     }
@@ -106,7 +106,7 @@ class Message extends Base {
        * The thread started by this message
        * @type {?ThreadChannel}
        */
-      this.thread = this.client.channels.add(data.thread);
+      this.thread = this.client.channels._add(data.thread);
     } else if (!this.thread) {
       this.thread = null;
     }
@@ -182,7 +182,7 @@ class Message extends Base {
     this.reactions = new ReactionManager(this);
     if (data.reactions?.length > 0) {
       for (const reaction of data.reactions) {
-        this.reactions.add(reaction);
+        this.reactions._add(reaction);
       }
     }
 
@@ -231,7 +231,7 @@ class Message extends Base {
     if (this.member && data.member) {
       this.member._patch(data.member);
     } else if (data.member && this.guild && this.author) {
-      this.guild.members.add(Object.assign(data.member, { user: this.author }));
+      this.guild.members._add(Object.assign(data.member, { user: this.author }));
     }
 
     /**
@@ -261,7 +261,7 @@ class Message extends Base {
       : null;
 
     if (data.referenced_message) {
-      this.channel.messages.add(data.referenced_message);
+      this.channel.messages._add(data.referenced_message);
     }
 
     /**
@@ -282,7 +282,7 @@ class Message extends Base {
         id: data.interaction.id,
         type: InteractionTypes[data.interaction.type],
         commandName: data.interaction.name,
-        user: this.client.users.add(data.interaction.user),
+        user: this.client.users._add(data.interaction.user),
       };
     } else if (!this.interaction) {
       this.interaction = null;
@@ -311,7 +311,7 @@ class Message extends Base {
     if ('content' in data) this.content = data.content;
     if ('pinned' in data) this.pinned = data.pinned;
     if ('tts' in data) this.tts = data.tts;
-    if ('thread' in data) this.thread = this.client.channels.add(data.thread);
+    if ('thread' in data) this.thread = this.client.channels._add(data.thread);
 
     if ('attachments' in data) {
       this.attachments = new Collection();
diff --git a/src/structures/MessageComponentInteraction.js b/src/structures/MessageComponentInteraction.js
index 6e4c5c2b4..65c7f2730 100644
--- a/src/structures/MessageComponentInteraction.js
+++ b/src/structures/MessageComponentInteraction.js
@@ -18,7 +18,7 @@ class MessageComponentInteraction extends Interaction {
      * The message to which the component was attached
      * @type {Message|APIMessage}
      */
-    this.message = this.channel?.messages.add(data.message) ?? data.message;
+    this.message = this.channel?.messages._add(data.message) ?? data.message;
 
     /**
      * The custom id of the component which was interacted with
diff --git a/src/structures/MessageMentions.js b/src/structures/MessageMentions.js
index 472bf3a97..957437d19 100644
--- a/src/structures/MessageMentions.js
+++ b/src/structures/MessageMentions.js
@@ -49,9 +49,9 @@ class MessageMentions {
         this.users = new Collection();
         for (const mention of users) {
           if (mention.member && message.guild) {
-            message.guild.members.add(Object.assign(mention.member, { user: mention }));
+            message.guild.members._add(Object.assign(mention.member, { user: mention }));
           }
-          const user = message.client.users.add(mention);
+          const user = message.client.users._add(mention);
           this.users.set(user.id, user);
         }
       }
@@ -130,7 +130,7 @@ class MessageMentions {
      * The author of the message that this message is a reply to
      * @type {?User}
      */
-    this.repliedUser = repliedUser ? this.client.users.add(repliedUser) : null;
+    this.repliedUser = repliedUser ? this.client.users._add(repliedUser) : null;
   }
 
   /**
diff --git a/src/structures/TeamMember.js b/src/structures/TeamMember.js
index 4a035978a..52753fa66 100644
--- a/src/structures/TeamMember.js
+++ b/src/structures/TeamMember.js
@@ -37,7 +37,7 @@ class TeamMember extends Base {
      * The user for this Team Member
      * @type {User}
      */
-    this.user = this.client.users.add(data.user);
+    this.user = this.client.users._add(data.user);
   }
 
   /**
diff --git a/src/structures/TextChannel.js b/src/structures/TextChannel.js
index 490d523db..f6b4a3fd5 100644
--- a/src/structures/TextChannel.js
+++ b/src/structures/TextChannel.js
@@ -90,7 +90,7 @@ class TextChannel extends GuildChannel {
     }
 
     if ('messages' in data) {
-      for (const message of data.messages) this.messages.add(message);
+      for (const message of data.messages) this.messages._add(message);
     }
   }
 
diff --git a/src/structures/ThreadChannel.js b/src/structures/ThreadChannel.js
index 83dca99de..b98a5525b 100644
--- a/src/structures/ThreadChannel.js
+++ b/src/structures/ThreadChannel.js
@@ -150,7 +150,7 @@ class ThreadChannel extends Channel {
     }
 
     if (data.member && this.client.user) this.members._add({ user_id: this.client.user.id, ...data.member });
-    if (data.messages) for (const message of data.messages) this.messages.add(message);
+    if (data.messages) for (const message of data.messages) this.messages._add(message);
   }
 
   /**
diff --git a/src/structures/User.js b/src/structures/User.js
index 66c39ad5d..62d5dbad4 100644
--- a/src/structures/User.js
+++ b/src/structures/User.js
@@ -212,7 +212,7 @@ class User extends Base {
         recipient_id: this.id,
       },
     });
-    return this.client.channels.add(data);
+    return this.client.channels._add(data);
   }
 
   /**
@@ -223,7 +223,7 @@ class User extends Base {
     const { dmChannel } = this;
     if (!dmChannel) throw new Error('USER_NO_DMCHANNEL');
     await this.client.api.channels(dmChannel.id).delete();
-    this.client.channels.remove(dmChannel.id);
+    this.client.channels._remove(dmChannel.id);
     return dmChannel;
   }
 
diff --git a/src/structures/Webhook.js b/src/structures/Webhook.js
index d4b21f1a0..80ad0e5ee 100644
--- a/src/structures/Webhook.js
+++ b/src/structures/Webhook.js
@@ -70,14 +70,14 @@ class Webhook {
      * The owner of the webhook
      * @type {?(User|APIUser)}
      */
-    this.owner = data.user ? this.client.users?.add(data.user) ?? data.user : null;
+    this.owner = data.user ? this.client.users?._add(data.user) ?? data.user : null;
 
     /**
      * The source guild of the webhook
      * @type {?(Guild|APIGuild)}
      */
     this.sourceGuild = data.source_guild
-      ? this.client.guilds?.add(data.source_guild, false) ?? data.source_guild
+      ? this.client.guilds?._add(data.source_guild, false) ?? data.source_guild
       : null;
 
     /**
@@ -175,7 +175,7 @@ class Webhook {
         query: { thread_id: messagePayload.options.threadId, wait: true },
         auth: false,
       })
-      .then(d => this.client.channels?.cache.get(d.channel_id)?.messages.add(d, false) ?? d);
+      .then(d => this.client.channels?.cache.get(d.channel_id)?.messages._add(d, false) ?? d);
   }
 
   /**
@@ -250,7 +250,7 @@ class Webhook {
     if (!this.token) throw new Error('WEBHOOK_TOKEN_UNAVAILABLE');
 
     const data = await this.client.api.webhooks(this.id, this.token).messages(message).get();
-    return this.client.channels?.cache.get(data.channel_id)?.messages.add(data, cache) ?? data;
+    return this.client.channels?.cache.get(data.channel_id)?.messages._add(data, cache) ?? data;
   }
 
   /**
@@ -279,7 +279,7 @@ class Webhook {
     if (!messageManager) return d;
 
     const existing = messageManager.cache.get(d.id);
-    if (!existing) return messageManager.add(d);
+    if (!existing) return messageManager._add(d);
 
     const clone = existing._clone();
     clone._patch(d);
diff --git a/test/tester2000.js b/test/tester2000.js
index 3d52b81fb..c47b73fdf 100644
--- a/test/tester2000.js
+++ b/test/tester2000.js
@@ -7,7 +7,8 @@ const { Client, Options, Intents, Formatters } = require('../src');
 const log = (...args) => console.log(process.uptime().toFixed(3), ...args);
 
 const client = new Client({
-  intents: Intents.ALL,
+  // 😏
+  intents: Object.values(Intents.FLAGS).reduce((acc, p) => acc | p, 0),
   makeCache: Options.cacheWithLimits({
     MessageManager: 10,
     PresenceManager: 10,
diff --git a/typings/index.d.ts b/typings/index.d.ts
index 181f23ef1..a6148e948 100644
--- a/typings/index.d.ts
+++ b/typings/index.d.ts
@@ -2054,7 +2054,7 @@ export abstract class DataManager<K, Holds, R> extends BaseManager {
 
 export abstract class CachedManager<K, Holds, R> extends DataManager<K, Holds, R> {
   public constructor(client: Client, holds: Constructable<Holds>);
-  public add(data: unknown, cache?: boolean, { id, extras }?: { id: K; extras: unknown[] }): Holds;
+  private _add(data: unknown, cache?: boolean, { id, extras }?: { id: K; extras: unknown[] }): Holds;
 }
 
 export class ApplicationCommandManager<
@@ -2373,12 +2373,9 @@ export class ThreadManager<AllowedThreadType> extends CachedManager<Snowflake, T
   public fetchActive(cache?: boolean): Promise<FetchedThreads>;
 }
 
-export interface ThreadMemberManager
-  extends Omit<CachedManager<Snowflake, ThreadMember, ThreadMemberResolvable>, 'add'> {}
-export class ThreadMemberManager {
+export class ThreadMemberManager extends CachedManager<Snowflake, ThreadMember, ThreadMemberResolvable> {
   public constructor(thread: ThreadChannel, iterable?: Iterable<unknown>);
   public thread: ThreadChannel;
-  public _add(data: unknown, cache?: boolean): ThreadMember;
   public add(member: UserResolvable | '@me', reason?: string): Promise<Snowflake>;
   public fetch(cache?: boolean): Promise<Collection<Snowflake, ThreadMember>>;
   public remove(id: Snowflake | '@me', reason?: string): Promise<Snowflake>;