diff --git a/src/modules/chat/emotes.js b/src/modules/chat/emotes.js
index c80ec8b1..27a42d07 100644
--- a/src/modules/chat/emotes.js
+++ b/src/modules/chat/emotes.js
@@ -6,8 +6,8 @@
 
 import Module from 'utilities/module';
 import {ManagedStyle} from 'utilities/dom';
-import {has, timeout} from 'utilities/object';
-import {API_SERVER} from 'utilities/constants';
+import {has, timeout, SourcedSet} from 'utilities/object';
+import {CLIENT_ID, API_SERVER} from 'utilities/constants';
 
 
 const MODIFIERS = {
@@ -61,13 +61,16 @@ export default class Emotes extends Module {
 		this.__twitch_emote_to_set = new Map;
 		this.__twitch_set_to_channel = new Map;
 
-		this.default_sets = new Set;
-		this.global_sets = new Set;
+		this.default_sets = new SourcedSet;
+		this.global_sets = new SourcedSet;
 
 		this.emote_sets = {};
 	}
 
 	onEnable() {
+		// Just in case there's a weird load order going on.
+		this.on('site:enabled', this.refresh_twitch_inventory);
+
 		this.style = new ManagedStyle('emotes');
 
 		if ( Object.keys(this.emote_sets).length ) {
@@ -96,9 +99,9 @@ export default class Emotes extends Module {
 		const room = this.parent.getRoom(room_id, room_login, true),
 			user = this.parent.getUser(user_id, user_login, true);
 
-		return (user ? user.emote_sets : []).concat(
-			room ? room.emote_sets : [],
-			Array.from(this.default_sets)
+		return (user ? user.emote_sets._cache : []).concat(
+			room ? room.emote_sets._cache : [],
+			this.default_sets._cache
 		);
 	}
 
@@ -136,12 +139,11 @@ export default class Emotes extends Module {
 
 		const sets = data.sets || {};
 
-		for(const set_id of data.default_sets)
-			this.default_sets.add(set_id);
+		this.default_sets.extend('ffz-global', ...data.default_sets);
 
 		for(const set_id in sets)
 			if ( has(sets, set_id) ) {
-				this.global_sets.add(set_id);
+				this.global_sets.push('ffz-global', set_id);
 				this.load_set_data(set_id, sets[set_id]);
 			}
 
@@ -160,8 +162,7 @@ export default class Emotes extends Module {
 					const user = this.parent.getUser(undefined, login),
 						sets = user.emote_sets;
 
-					if ( sets.indexOf(set_id) === -1 )
-						sets.push(set_id);
+					sets.push('ffz-global', set_id);
 				}
 
 				this.log.info(`Added "${emote_set ? emote_set.title : set_id}" emote set to ${users.length} users.`);
@@ -279,8 +280,27 @@ export default class Emotes extends Module {
 	// Twitch Data Lookup
 	// ========================================================================
 
-	refresh_twitch_inventory() {
-		this.log.debug('Unimplemented: refresh_twitch_inventory');
+	async refresh_twitch_inventory() {
+		const user = this.resolve('site').getUser();
+		if ( ! user )
+			return;
+
+		let data;
+		try {
+			data = await fetch('https://api.twitch.tv/v5/inventory/emoticons', {
+				headers: {
+					'Client-ID': CLIENT_ID,
+					'Authorization': `OAuth ${user.authToken}`
+				}
+			}).then(r => r.json());
+
+		} catch(err) {
+			this.log.error('Error loading Twitch inventory.', err);
+			return;
+		}
+
+		this.twitch_inventory_sets = data.emoticon_sets ? Object.keys(data.emoticon_sets) : [];
+		this.log.info('Twitch Inventory Sets:', this.twitch_inventory_sets);
 	}
 
 
diff --git a/src/modules/chat/index.js b/src/modules/chat/index.js
index 4668b101..76e73914 100644
--- a/src/modules/chat/index.js
+++ b/src/modules/chat/index.js
@@ -9,7 +9,7 @@ const WEBKIT = IS_WEBKIT ? '-webkit-' : '';
 
 import Module from 'utilities/module';
 import {createElement, ManagedStyle} from 'utilities/dom';
-import {timeout, has} from 'utilities/object';
+import {timeout, has, SourcedSet} from 'utilities/object';
 
 import Badges from './badges';
 import Emotes from './emotes';
@@ -283,7 +283,7 @@ export default class Chat extends Module {
 			return null;
 
 		else
-			user = {id, login, badges: [], emote_sets: []};
+			user = {id, login, badges: [], emote_sets: new SourcedSet};
 
 		if ( id && id !== user.id ) {
 			// If the ID isn't what we expected, something is very wrong here.
diff --git a/src/modules/chat/room.js b/src/modules/chat/room.js
index ace10d80..fd7b269d 100644
--- a/src/modules/chat/room.js
+++ b/src/modules/chat/room.js
@@ -8,7 +8,7 @@ import {API_SERVER, IS_WEBKIT} from 'utilities/constants';
 
 import {EventEmitter} from 'utilities/events';
 import {createElement as e, ManagedStyle} from 'utilities/dom';
-import {has} from 'utilities/object';
+import {has, SourcedSet} from 'utilities/object';
 
 const WEBKIT = IS_WEBKIT ? '-webkit-' : '';
 
@@ -20,42 +20,71 @@ export default class Room extends EventEmitter {
 		this._destroy_timer = null;
 
 		this.manager = manager;
-		this.id = id;
+		this._id = id;
 		this.login = login;
 
-		if ( login )
-			this.manager.rooms[login] = this;
-
 		if ( id )
 			this.manager.room_ids[id] = this;
 
 		this.refs = new Set;
 		this.style = new ManagedStyle(`room--${login}`);
 
-		this.emote_sets = [];
+		this.emote_sets = new SourcedSet;
 		this.users = [];
 		this.user_ids = [];
 
-		if ( this.login ) {
-			this.manager.socket.subscribe(`room.${login}`);
-			this.load_data();
-		}
+		this.manager.emit(':room-add', this);
+		this.load_data();
 	}
 
+
 	destroy() {
 		clearTimeout(this._destroy_timer);
 		this._destroy_timer = null;
+
 		this.destroyed = true;
 
-		this.manager.socket.unsubscribe(`room.${this.login}`);
+		this.manager.emit(':room-remove', this);
 
 		this.style.destroy();
 
+		if ( this._login ) {
+			if ( this.manager.rooms[this._login] === this )
+				this.manager.rooms[this._login] = null;
+
+			this.manager.socket.unsubscribe(`room.${this.login}`);
+		}
+
 		if ( this.manager.room_ids[this.id] === this )
 			this.manager.room_ids[this.id] = null;
+	}
 
-		if ( this.manager.rooms[this.login] === this )
-			this.manager.rooms[this.login] = null;
+
+	get id() {
+		return this._id;
+	}
+
+	get login() {
+		return this._login;
+	}
+
+	set login(val) {
+		if ( this._login === val )
+			return;
+
+		if ( this._login ) {
+			if ( this.manager.rooms[this._login] === this )
+				this.manager.rooms[this._login] = null;
+
+			this.manager.socket.unsubscribe(`room.${this.login}`);
+		}
+
+		this._login = val;
+		if ( ! val )
+			return;
+
+		this.manager.socket.subscribe(`room.${val}`);
+		this.manager.emit(':room-update-login', this, val);
 	}
 
 
@@ -69,7 +98,7 @@ export default class Room extends EventEmitter {
 
 		let response, data;
 		try {
-			response = await fetch(`${API_SERVER}/v1/room/${this.login}`);
+			response = await fetch(`${API_SERVER}/v1/room/${this.id ? `id/${this.id}` : this.login}`);
 		} catch(err) {
 			tries++;
 			if ( tries < 10 )
@@ -89,9 +118,26 @@ export default class Room extends EventEmitter {
 			return false;
 		}
 
-		const d = this.data = data.room;
-		if ( d.set && this.emote_sets.indexOf(d) === -1 )
-			this.emote_sets.push(d.set);
+		const d = data.room,
+			id = '' + d.twitch_id;
+
+		if ( ! this._id ) {
+			this._id = id;
+			this.manager.room_ids[id] = this;
+
+		} else if ( this._id !== id ) {
+			this.manager.log.warn(`Received data for ${this.id}:${this.login} with the wrong ID: ${id}`);
+			return false;
+		}
+
+		this.login = d.id;
+		this.data = d;
+
+		if ( d.set )
+			this.emote_sets.set('main', d.set);
+		else
+			this.emote_sets.delete('main');
+
 
 		if ( data.sets )
 			for(const set_id in data.sets)
diff --git a/src/utilities/constants.js b/src/utilities/constants.js
index 66969762..bc99c32d 100644
--- a/src/utilities/constants.js
+++ b/src/utilities/constants.js
@@ -3,6 +3,7 @@
 export const DEBUG = localStorage.ffzDebugMode === 'true' && document.body.classList.contains('ffz-dev');
 export const SERVER = DEBUG ? '//localhost:8000' : 'https://cdn.frankerfacez.com';
 
+export const CLIENT_ID = 'a3bc9znoz6vi8ozsoca0inlcr4fcvkl';
 export const API_SERVER = '//api.frankerfacez.com';
 
 export const WS_CLUSTERS = {
diff --git a/src/utilities/object.js b/src/utilities/object.js
index de114c0c..833bc6f7 100644
--- a/src/utilities/object.js
+++ b/src/utilities/object.js
@@ -164,4 +164,76 @@ export function maybe_call(fn, ctx, ...args) {
 	}
 
 	return fn;
+}
+
+
+export class SourcedSet {
+	constructor() {
+		this._cache = [];
+	}
+
+	_rebuild() {
+		if ( ! this._sources )
+			return;
+
+		this._cache = [];
+		for(const items of this._sources.values())
+			for(const i of items)
+				if ( ! this._cache.includes(i) )
+					this._cache.push(i);
+	}
+
+	get(key) { return this._sources && this._sources.get(key) }
+	has(key) { return this._sources ? this._sources.has(key) : false }
+
+	delete(key) {
+		if ( this._sources && this._sources.has(key) ) {
+			this._sources.delete(key);
+			this._rebuild();
+		}
+	}
+
+	extend(key, ...items) {
+		if ( ! this._sources )
+			this._sources = new Map;
+
+		const had = this.has(key);
+		this._sources.set(key, [false, items]);
+		if ( had )
+			this._rebuild();
+		else
+			for(const i of items)
+				if ( ! this._cache.includes(i) )
+					this._cache.push(i);
+	}
+
+	set(key, val) {
+		if ( ! this._sources )
+			this._sources = new Map;
+
+		const had = this.has(key);
+		this._sources.set(key, [val]);
+
+		if ( had )
+			this._rebuild();
+
+		else if ( ! this._cache.includes(val) )
+			this._cache.push(val);
+	}
+
+	push(key, val) {
+		if ( ! this._sources )
+			return this.set(key, val);
+
+		const old_val = this._sources.get(key);
+		if ( old_val === undefined )
+			return this.set(key, val);
+
+		else if ( old_val.includes(val) )
+			return;
+
+		old_val.push(val);
+		if ( ! this._cache.includes(val) )
+			this._cache.push(val);
+	}
 }
\ No newline at end of file