diff --git a/src/structures/CategoryChannel.js b/src/structures/CategoryChannel.js
index d7121a32..b9d3ceff 100644
--- a/src/structures/CategoryChannel.js
+++ b/src/structures/CategoryChannel.js
@@ -13,6 +13,19 @@ class CategoryChannel extends GuildChannel {
   get children() {
     return this.guild.channels.filter(c => c.parentID === this.id);
   }
+
+  /**
+   * Sets the category parent of this channel.
+   * <warn>It is not currently possible to set the parent of a CategoryChannel.</warn>
+   * @method setParent
+   * @memberof CategoryChannel
+   * @instance
+   * @param {?GuildChannel|Snowflake} channel Parent channel
+   * @param {Object} [options={}] Options to pass
+   * @param {boolean} [options.lockPermissions=true] Lock the permissions to what the parent's permissions are
+   * @param {string} [options.reason] Reason for modifying the parent of this channel
+   * @returns {Promise<GuildChannel>}
+   */
 }
 
 module.exports = CategoryChannel;
diff --git a/src/structures/Emoji.js b/src/structures/Emoji.js
index d1cca284..302ebfcc 100644
--- a/src/structures/Emoji.js
+++ b/src/structures/Emoji.js
@@ -45,6 +45,12 @@ class Emoji extends Base {
      */
     this.managed = data.managed;
 
+    /**
+     * Whether this emoji is animated
+     * @type {boolean}
+     */
+    this.animated = data.animated;
+
     this._roles = data.roles;
   }
 
@@ -85,7 +91,7 @@ class Emoji extends Base {
    * @readonly
    */
   get url() {
-    return this.client.rest.cdn.Emoji(this.id);
+    return this.client.rest.cdn.Emoji(this.id, this.animated ? 'gif' : 'png');
   }
 
   /**
@@ -198,7 +204,11 @@ class Emoji extends Base {
    * msg.reply(`Hello! ${emoji}`);
    */
   toString() {
-    return this.requiresColons ? `<:${this.name}:${this.id}>` : this.name;
+    if (!this.id || !this.requiresColons) {
+      return this.name;
+    }
+
+    return `<${this.animated ? 'a' : ''}:${this.name}:${this.id}>`;
   }
 
   /**
diff --git a/src/structures/Guild.js b/src/structures/Guild.js
index 307e5eda..5f967458 100644
--- a/src/structures/Guild.js
+++ b/src/structures/Guild.js
@@ -910,8 +910,8 @@ class Guild extends Base {
   /**
    * Creates a new channel in the guild.
    * @param {string} name The name of the new channel
-   * @param {string} type The type of the new channel, either `text`, `voice`, or `category`
    * @param {Object} [options] Options
+   * @param {string} [options.type='text'] The type of the new channel, either `text`, `voice`, or `category`
    * @param {boolean} [options.nsfw] Whether the new channel is nsfw
    * @param {number} [options.bitrate] Bitrate of the new channel in bits (only voice)
    * @param {number} [options.userLimit] Maximum amount of users allowed in the new channel (only voice)
@@ -925,7 +925,7 @@ class Guild extends Base {
    *   .then(channel => console.log(`Created new channel ${channel}`))
    *   .catch(console.error);
    */
-  createChannel(name, type, { nsfw, bitrate, userLimit, parent, overwrites, reason } = {}) {
+  createChannel(name, { type, nsfw, bitrate, userLimit, parent, overwrites, reason } = {}) {
     if (overwrites instanceof Collection || overwrites instanceof Array) {
       overwrites = overwrites.map(overwrite => {
         let allow = overwrite.allow || (overwrite.allowed ? overwrite.allowed.bitfield : 0);
@@ -955,7 +955,7 @@ class Guild extends Base {
     return this.client.api.guilds(this.id).channels.post({
       data: {
         name,
-        type: ChannelTypes[type.toUpperCase()],
+        type: type ? ChannelTypes[type.toUpperCase()] : 'text',
         nsfw,
         bitrate,
         user_limit: userLimit,
diff --git a/src/structures/GuildChannel.js b/src/structures/GuildChannel.js
index fa0f8f84..a8b5d132 100644
--- a/src/structures/GuildChannel.js
+++ b/src/structures/GuildChannel.js
@@ -9,7 +9,7 @@ const { MessageNotificationTypes } = require('../util/Constants');
 const { Error, TypeError } = require('../errors');
 
 /**
- * Represents a guild channel (e.g. text channels and voice channels).
+ * Represents a guild channel (i.g. a {@link TextChannel}, {@link VoiceChannel} or {@link CategoryChannel}).
  * @extends {Channel}
  */
 class GuildChannel extends Channel {
@@ -323,14 +323,15 @@ class GuildChannel extends Channel {
 
   /**
    * Sets the category parent of this channel.
-   * @param {GuildChannel|Snowflake} channel Parent channel
-   * @param {boolean} [options.lockPermissions] Lock the permissions to what the parent's permissions are
+   * @param {?GuildChannel|Snowflake} channel Parent channel
+   * @param {Object} [options={}] Options to pass
+   * @param {boolean} [options.lockPermissions=true] Lock the permissions to what the parent's permissions are
    * @param {string} [options.reason] Reason for modifying the parent of this channel
    * @returns {Promise<GuildChannel>}
    */
   setParent(channel, { lockPermissions = true, reason } = {}) {
     return this.edit({
-      parentID: channel.id ? channel.id : channel,
+      parentID: channel !== null ? channel.id ? channel.id : channel : null,
       lockPermissions,
     }, reason);
   }
diff --git a/src/structures/Message.js b/src/structures/Message.js
index a409e411..9b86279e 100644
--- a/src/structures/Message.js
+++ b/src/structures/Message.js
@@ -377,10 +377,10 @@ class Message extends Base {
     }
     if (!options.content) options.content = content;
 
-    const { data, files } = await createMessage(this, options);
+    const { data } = await createMessage(this, options);
 
     return this.client.api.channels[this.channel.id].messages[this.id]
-      .patch({ data, files })
+      .patch({ data })
       .then(d => {
         const clone = this._clone();
         clone._patch(d);
diff --git a/src/structures/interfaces/Collector.js b/src/structures/interfaces/Collector.js
index 2c4fd158..0e7f1f95 100644
--- a/src/structures/interfaces/Collector.js
+++ b/src/structures/interfaces/Collector.js
@@ -76,17 +76,18 @@ class Collector extends EventEmitter {
    */
   handleCollect(...args) {
     const collect = this.collect(...args);
-    if (!collect || !this.filter(...args, this.collected)) return;
 
-    this.collected.set(collect.key, collect.value);
+    if (collect && this.filter(...args, this.collected)) {
+      this.collected.set(collect.key, collect.value);
 
-    /**
-     * Emitted whenever an element is collected.
-     * @event Collector#collect
-     * @param {*} element The element that got collected
-     * @param {...*} args The arguments emitted by the listener
-     */
-    this.emit('collect', collect.value, ...args);
+      /**
+       * Emitted whenever an element is collected.
+       * @event Collector#collect
+       * @param {*} element The element that got collected
+       * @param {...*} args The arguments emitted by the listener
+       */
+      this.emit('collect', collect.value, ...args);
+    }
     this.checkEnd();
   }
 
diff --git a/src/structures/shared/CreateMessage.js b/src/structures/shared/CreateMessage.js
index 5abf0799..d0fa3572 100644
--- a/src/structures/shared/CreateMessage.js
+++ b/src/structures/shared/CreateMessage.js
@@ -19,18 +19,31 @@ module.exports = async function createMessage(channel, options) {
     if (isNaN(options.nonce) || options.nonce < 0) throw new RangeError('MESSAGE_NONCE_TYPE');
   }
 
+  let { content } = options;
   if (options instanceof MessageEmbed) options = webhook ? { embeds: [options] } : { embed: options };
   if (options instanceof MessageAttachment) options = { files: [options.file] };
 
+  if (content instanceof Array || options instanceof Array) {
+    const which = content instanceof Array ? content : options;
+    const attachments = which.filter(item => item instanceof MessageAttachment);
+    const embeds = which.filter(item => item instanceof MessageEmbed);
+    if (attachments.length) options = { files: attachments };
+    if (embeds.length) options = { embeds };
+    if ((embeds.length || attachments.length) && content instanceof Array) {
+      content = null;
+      options.content = '';
+    }
+  }
+
   if (options.reply && !(channel instanceof User || channel instanceof GuildMember) && channel.type !== 'dm') {
     const id = channel.client.users.resolveID(options.reply);
     const mention = `<@${options.reply instanceof GuildMember && options.reply.nickname ? '!' : ''}${id}>`;
     if (options.split) options.split.prepend = `${mention}, ${options.split.prepend || ''}`;
-    options.content = `${mention}${typeof options.content !== 'undefined' ? `, ${options.content}` : ''}`;
+    content = `${mention}${typeof options.content !== 'undefined' ? `, ${options.content}` : ''}`;
   }
 
-  if (options.content) {
-    options.content = Util.resolveString(options.content);
+  if (content) {
+    options.content = Util.resolveString(content);
     if (options.split && typeof options.split !== 'object') options.split = {};
     // Wrap everything in a code block
     if (typeof options.code !== 'undefined' && (typeof options.code !== 'boolean' || options.code === true)) {
diff --git a/src/util/Constants.js b/src/util/Constants.js
index efeeb29f..bc67df35 100644
--- a/src/util/Constants.js
+++ b/src/util/Constants.js
@@ -110,7 +110,7 @@ function makeImageUrl(root, { format = 'webp', size } = {}) {
 exports.Endpoints = {
   CDN(root) {
     return {
-      Emoji: emojiID => `${root}/emojis/${emojiID}.png`,
+      Emoji: (emojiID, format = 'png') => `${root}/emojis/${emojiID}.${format}`,
       Asset: name => `${root}/assets/${name}`,
       DefaultAvatar: number => `${root}/embed/avatars/${number}.png`,
       Avatar: (userID, hash, format = 'default', size) => {
diff --git a/src/util/Util.js b/src/util/Util.js
index d92dc94b..f1758000 100644
--- a/src/util/Util.js
+++ b/src/util/Util.js
@@ -70,18 +70,21 @@ class Util {
    * Parses emoji info out of a string. The string must be one of:
    * * A UTF-8 emoji (no ID)
    * * A URL-encoded UTF-8 emoji (no ID)
-   * * A Discord custom emoji (`<:name:id>`)
+   * * A Discord custom emoji (`<:name:id>` or `<a:name:id>`)
    * @param {string} text Emoji string to parse
-   * @returns {Object} Object with `name` and `id` properties
+   * @returns {Object} Object with `animated`, `name`, and `id` properties
    * @private
    */
   static parseEmoji(text) {
     if (text.includes('%')) text = decodeURIComponent(text);
     if (text.includes(':')) {
-      const [name, id] = text.split(':');
-      return { name, id };
+      const m = text.match(/<?(a)?:(\w{2,32}):(\d{17,19})>?/);
+      if (!m) {
+        return null;
+      }
+      return { animated: Boolean(m[1]), name: m[2], id: m[3] };
     } else {
-      return { name: text, id: null };
+      return { animated: false, name: text, id: null };
     }
   }