diff --git a/packages/core/README.md b/packages/core/README.md
index e950109138fc..b41da95e63fa 100644
--- a/packages/core/README.md
+++ b/packages/core/README.md
@@ -39,10 +39,10 @@ import { WebSocketManager } from '@discordjs/ws';
 import { GatewayDispatchEvents, GatewayIntentBits, InteractionType, MessageFlags, Client } from '@discordjs/core';
 
 // Create REST and WebSocket managers directly
-const rest = new REST({ version: '10' }).setToken(token);
+const rest = new REST({ version: '10' }).setToken(process.env.DISCORD_TOKEN);
 
 const gateway = new WebSocketManager({
-	token,
+	token: process.env.DISCORD_TOKEN,
 	intents: GatewayIntentBits.GuildMessages | GatewayIntentBits.MessageContent,
 	rest,
 });
diff --git a/packages/discord.js/src/client/Client.js b/packages/discord.js/src/client/Client.js
index 907912860f73..07d15c973f6d 100644
--- a/packages/discord.js/src/client/Client.js
+++ b/packages/discord.js/src/client/Client.js
@@ -226,7 +226,7 @@ class Client extends BaseClient {
       await this.ws.connect();
       return this.token;
     } catch (error) {
-      this.destroy();
+      await this.destroy();
       throw error;
     }
   }
@@ -242,13 +242,13 @@ class Client extends BaseClient {
 
   /**
    * Logs out, terminates the connection to Discord, and destroys the client.
-   * @returns {void}
+   * @returns {Promise<void>}
    */
-  destroy() {
+  async destroy() {
     super.destroy();
 
     this.sweepers.destroy();
-    this.ws.destroy();
+    await this.ws.destroy();
     this.token = null;
     this.rest.setToken(null);
   }
diff --git a/packages/discord.js/src/client/websocket/WebSocketManager.js b/packages/discord.js/src/client/websocket/WebSocketManager.js
index b0e4fb10a2ef..e3a2ec749778 100644
--- a/packages/discord.js/src/client/websocket/WebSocketManager.js
+++ b/packages/discord.js/src/client/websocket/WebSocketManager.js
@@ -320,12 +320,12 @@ class WebSocketManager extends EventEmitter {
    * Destroys this manager and all its shards.
    * @private
    */
-  destroy() {
+  async destroy() {
     if (this.destroyed) return;
     // TODO: Make a util for getting a stack
     this.debug(`Manager was destroyed. Called by:\n${new Error().stack}`);
     this.destroyed = true;
-    this._ws?.destroy({ code: CloseCodes.Normal });
+    await this._ws?.destroy({ code: CloseCodes.Normal });
   }
 
   /**
diff --git a/packages/discord.js/src/structures/GuildMember.js b/packages/discord.js/src/structures/GuildMember.js
index 3e71824f3f12..8806b508b555 100644
--- a/packages/discord.js/src/structures/GuildMember.js
+++ b/packages/discord.js/src/structures/GuildMember.js
@@ -238,12 +238,12 @@ class GuildMember extends Base {
   }
 
   /**
-   * The nickname of this member, or their username if they don't have one
+   * The nickname of this member, or their user display name if they don't have one
    * @type {?string}
    * @readonly
    */
   get displayName() {
-    return this.nickname ?? this.user.username;
+    return this.nickname ?? this.user.displayName;
   }
 
   /**
diff --git a/packages/discord.js/src/structures/User.js b/packages/discord.js/src/structures/User.js
index c784e4e95eb4..092cc3c6ffcc 100644
--- a/packages/discord.js/src/structures/User.js
+++ b/packages/discord.js/src/structures/User.js
@@ -1,11 +1,15 @@
 'use strict';
 
+const process = require('node:process');
 const { userMention } = require('@discordjs/builders');
+const { calculateUserDefaultAvatarIndex } = require('@discordjs/rest');
 const { DiscordSnowflake } = require('@sapphire/snowflake');
 const Base = require('./Base');
 const TextBasedChannel = require('./interfaces/TextBasedChannel');
 const UserFlagsBitField = require('../util/UserFlagsBitField');
 
+let tagDeprecationEmitted = false;
+
 /**
  * Represents a user on Discord.
  * @implements {TextBasedChannel}
@@ -41,6 +45,16 @@ class User extends Base {
       this.username ??= null;
     }
 
+    if ('global_name' in data) {
+      /**
+       * The global name of this user
+       * @type {?string}
+       */
+      this.globalName = data.global_name;
+    } else {
+      this.globalName ??= null;
+    }
+
     if ('bot' in data) {
       /**
        * Whether or not the user is a bot
@@ -53,7 +67,8 @@ class User extends Base {
 
     if ('discriminator' in data) {
       /**
-       * A discriminator based on username for the user
+       * The discriminator of this user
+       * <info>`'0'`, or a 4-digit stringified number if they're using the legacy username system</info>
        * @type {?string}
        */
       this.discriminator = data.discriminator;
@@ -154,7 +169,8 @@ class User extends Base {
    * @readonly
    */
   get defaultAvatarURL() {
-    return this.client.rest.cdn.defaultAvatar(this.discriminator % 5);
+    const index = this.discriminator === '0' ? calculateUserDefaultAvatarIndex(this.id) : this.discriminator % 5;
+    return this.client.rest.cdn.defaultAvatar(index);
   }
 
   /**
@@ -188,12 +204,33 @@ class User extends Base {
   }
 
   /**
-   * The Discord "tag" (e.g. `hydrabolt#0001`) for this user
+   * The tag of this user
+   * <info>This user's username, or their legacy tag (e.g. `hydrabolt#0001`)
+   * if they're using the legacy username system</info>
    * @type {?string}
    * @readonly
+   * @deprecated Use {@link User#username} instead.
    */
   get tag() {
-    return typeof this.username === 'string' ? `${this.username}#${this.discriminator}` : null;
+    if (!tagDeprecationEmitted) {
+      process.emitWarning('User#tag is deprecated. Use User#username instead.', 'DeprecationWarning');
+      tagDeprecationEmitted = true;
+    }
+
+    return typeof this.username === 'string'
+      ? this.discriminator === '0'
+        ? this.username
+        : `${this.username}#${this.discriminator}`
+      : null;
+  }
+
+  /**
+   * The global name of this user, or their username if they don't have one
+   * @type {?string}
+   * @readonly
+   */
+  get displayName() {
+    return this.globalName ?? this.username;
   }
 
   /**
diff --git a/packages/discord.js/src/util/Options.js b/packages/discord.js/src/util/Options.js
index 7855d3e2703c..9e31308e7590 100644
--- a/packages/discord.js/src/util/Options.js
+++ b/packages/discord.js/src/util/Options.js
@@ -35,7 +35,7 @@ const { version } = require('../../package.json');
  * @property {IntentsResolvable} intents Intents to enable for this connection
  * @property {number} [waitGuildTimeout=15_000] Time in milliseconds that clients with the
  * {@link GatewayIntentBits.Guilds} gateway intent should wait for missing guilds to be received before being ready.
- * @property {SweeperOptions} [sweepers={}] Options for cache sweeping
+ * @property {SweeperOptions} [sweepers=this.DefaultSweeperSettings] Options for cache sweeping
  * @property {WebsocketOptions} [ws] Options for the WebSocket
  * @property {RESTOptions} [rest] Options for the REST manager
  * @property {Function} [jsonTransformer] A function used to transform outgoing json data
diff --git a/packages/discord.js/test/createGuild.js b/packages/discord.js/test/createGuild.js
index 90e529a43182..21ac04ea16b5 100644
--- a/packages/discord.js/test/createGuild.js
+++ b/packages/discord.js/test/createGuild.js
@@ -26,7 +26,7 @@ client.on('ready', async () => {
   } catch (error) {
     console.error(error);
   } finally {
-    client.destroy();
+    await client.destroy();
   }
 });
 
diff --git a/packages/discord.js/test/shard.js b/packages/discord.js/test/shard.js
index a5dfbe8e1a28..f27b30562a79 100644
--- a/packages/discord.js/test/shard.js
+++ b/packages/discord.js/test/shard.js
@@ -28,9 +28,9 @@ process.send(123);
 client.on('ready', () => {
   console.log('Ready', client.options.shards);
   if (client.options.shards === 0) {
-    setTimeout(() => {
+    setTimeout(async () => {
       console.log('kek dying');
-      client.destroy();
+      await client.destroy();
     }, 5_000);
   }
 });
diff --git a/packages/discord.js/test/templateCreateGuild.js b/packages/discord.js/test/templateCreateGuild.js
index 42730c567188..adf0e319b8cf 100644
--- a/packages/discord.js/test/templateCreateGuild.js
+++ b/packages/discord.js/test/templateCreateGuild.js
@@ -20,7 +20,7 @@ client
     } catch (error) {
       console.error(error);
     } finally {
-      client.destroy();
+      await client.destroy();
     }
   })
   .login(token)
diff --git a/packages/discord.js/typings/index.d.ts b/packages/discord.js/typings/index.d.ts
index 277b6fa794e0..27fd856715c0 100644
--- a/packages/discord.js/typings/index.d.ts
+++ b/packages/discord.js/typings/index.d.ts
@@ -956,7 +956,7 @@ export class Client<Ready extends boolean = boolean> extends BaseClient {
   public users: UserManager;
   public voice: ClientVoiceManager;
   public ws: WebSocketManager;
-  public destroy(): void;
+  public destroy(): Promise<void>;
   public fetchGuildPreview(guild: GuildResolvable): Promise<GuildPreview>;
   public fetchInvite(invite: InviteResolvable, options?: ClientFetchInviteOptions): Promise<Invite>;
   public fetchGuildTemplate(template: GuildTemplateResolvable): Promise<GuildTemplate>;
@@ -3060,13 +3060,16 @@ export class User extends PartialTextBasedChannel(Base) {
   public get createdAt(): Date;
   public get createdTimestamp(): number;
   public discriminator: string;
+  public get displayName(): string;
   public get defaultAvatarURL(): string;
   public get dmChannel(): DMChannel | null;
   public flags: Readonly<UserFlagsBitField> | null;
+  public globalName: string | null;
   public get hexAccentColor(): HexColorString | null | undefined;
   public id: Snowflake;
   public get partial(): false;
   public system: boolean;
+  /** @deprecated Use {@link User#username} instead. */
   public get tag(): string;
   public username: string;
   public avatarURL(options?: ImageURLOptions): string | null;
@@ -3326,7 +3329,7 @@ export class WebSocketManager extends EventEmitter {
   private debug(message: string, shardId?: number): void;
   private connect(): Promise<void>;
   private broadcast(packet: unknown): void;
-  private destroy(): void;
+  private destroy(): Promise<void>;
   private handlePacket(packet?: unknown, shard?: WebSocketShard): boolean;
   private checkShardsReady(): void;
   private triggerClientReady(): void;
diff --git a/packages/rest/src/index.ts b/packages/rest/src/index.ts
index 586580e61fc4..b6af7b7ef7df 100644
--- a/packages/rest/src/index.ts
+++ b/packages/rest/src/index.ts
@@ -5,7 +5,7 @@ export * from './lib/errors/RateLimitError.js';
 export * from './lib/RequestManager.js';
 export * from './lib/REST.js';
 export * from './lib/utils/constants.js';
-export { makeURLSearchParams, parseResponse } from './lib/utils/utils.js';
+export { calculateUserDefaultAvatarIndex, makeURLSearchParams, parseResponse } from './lib/utils/utils.js';
 
 /**
  * The {@link https://github.com/discordjs/discord.js/blob/main/packages/rest/#readme | @discordjs/rest} version
diff --git a/packages/rest/src/lib/CDN.ts b/packages/rest/src/lib/CDN.ts
index eddde427e469..a42966bd8829 100644
--- a/packages/rest/src/lib/CDN.ts
+++ b/packages/rest/src/lib/CDN.ts
@@ -119,12 +119,15 @@ export class CDN {
 	}
 
 	/**
-	 * Generates the default avatar URL for a discriminator.
+	 * Generates a default avatar URL
 	 *
-	 * @param discriminator - The discriminator modulo 5
+	 * @param index - The default avatar index
+	 * @remarks
+	 * To calculate the index for a user do `(userId >> 22) % 6`,
+	 * or `discriminator % 5` if they're using the legacy username system.
 	 */
-	public defaultAvatar(discriminator: number): string {
-		return this.makeURL(`/embed/avatars/${discriminator}`, { extension: 'png' });
+	public defaultAvatar(index: number): string {
+		return this.makeURL(`/embed/avatars/${index}`, { extension: 'png' });
 	}
 
 	/**
diff --git a/packages/rest/src/lib/REST.ts b/packages/rest/src/lib/REST.ts
index abfc06560a6e..4b24ab208639 100644
--- a/packages/rest/src/lib/REST.ts
+++ b/packages/rest/src/lib/REST.ts
@@ -41,7 +41,7 @@ export interface RESTOptions {
 	/**
 	 * The cdn path
 	 *
-	 * @defaultValue 'https://cdn.discordapp.com'
+	 * @defaultValue `'https://cdn.discordapp.com'`
 	 */
 	cdn: string;
 	/**
diff --git a/packages/rest/src/lib/utils/utils.ts b/packages/rest/src/lib/utils/utils.ts
index 0489b02d289d..07d63e542d86 100644
--- a/packages/rest/src/lib/utils/utils.ts
+++ b/packages/rest/src/lib/utils/utils.ts
@@ -1,5 +1,5 @@
 import { URLSearchParams } from 'node:url';
-import type { RESTPatchAPIChannelJSONBody } from 'discord-api-types/v10';
+import type { RESTPatchAPIChannelJSONBody, Snowflake } from 'discord-api-types/v10';
 import type { RateLimitData, ResponseLike } from '../REST.js';
 import { type RequestManager, RequestMethod } from '../RequestManager.js';
 import { RateLimitError } from '../errors/RateLimitError.js';
@@ -112,3 +112,12 @@ export async function onRateLimit(manager: RequestManager, rateLimitData: RateLi
 		throw new RateLimitError(rateLimitData);
 	}
 }
+
+/**
+ * Calculates the default avatar index for a given user id.
+ *
+ * @param userId - The user id to calculate the default avatar index for
+ */
+export function calculateUserDefaultAvatarIndex(userId: Snowflake) {
+	return Number(BigInt(userId) >> 22n) % 6;
+}