diff --git a/package.json b/package.json
index 837b0699..ca073897 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,6 @@
     "travis-after-all": "^1.4.4",
     "twgl.js": "3.2.0",
     "webpack": "^2.2.1",
-    "webpack-dev-server": "^2.4.1",
-    "xhr": "2.4.0"
+    "webpack-dev-server": "^2.4.1"
   }
 }
diff --git a/src/RenderConstants.js b/src/RenderConstants.js
index 12bdfd0d..3bbd7e0c 100644
--- a/src/RenderConstants.js
+++ b/src/RenderConstants.js
@@ -1,10 +1,4 @@
 /** @module RenderConstants */
-const DEFAULT_SKIN = {
-    squirrel: 'https://cdn.assets.scratch.mit.edu/internalapi/asset/7e24c99c1b853e52f8e7f9004416fa34.png/get/',
-    bus: 'https://cdn.assets.scratch.mit.edu/internalapi/asset/66895930177178ea01d9e610917f8acf.png/get/',
-    scratch_cat: 'https://cdn.assets.scratch.mit.edu/internalapi/asset/09dc888b0b7df19f70d81588ae73420e.svg/get/',
-    gradient: 'https://cdn.assets.scratch.mit.edu/internalapi/asset/a49ff276b9b8f997a1ae163992c2c145.png/get/'
-}.squirrel;
 
 /**
  * Various constants meant for use throughout the renderer.
@@ -17,13 +11,6 @@ module.exports = {
      */
     ID_NONE: -1,
 
-    /**
-     * The URL to use as the default skin for a Drawable.
-     * @todo Remove this in favor of falling back on a built-in skin.
-     * @const {string}
-     */
-    DEFAULT_SKIN: DEFAULT_SKIN,
-
     /**
      * Optimize for fewer than this number of Drawables sharing the same Skin.
      * Going above this may cause middleware warnings or a performance penalty but should otherwise behave correctly.
diff --git a/src/RenderWebGL.js b/src/RenderWebGL.js
index 79155759..de322fcf 100644
--- a/src/RenderWebGL.js
+++ b/src/RenderWebGL.js
@@ -2,7 +2,6 @@ const EventEmitter = require('events');
 
 const hull = require('hull.js');
 const twgl = require('twgl.js');
-const xhr = require('xhr');
 
 const BitmapSkin = require('./BitmapSkin');
 const Drawable = require('./Drawable');
@@ -84,9 +83,6 @@ class RenderWebGL extends EventEmitter {
         /** @type {module:twgl/m4.Mat4} */
         this._projection = twgl.m4.identity();
 
-        /** @type {Object.<string,int>} */
-        this._skinUrlMap = {};
-
         /** @type {ShaderManager} */
         this._shaderManager = new ShaderManager(gl);
 
@@ -184,70 +180,6 @@ class RenderWebGL extends EventEmitter {
         this.emit(RenderConstants.Events.NativeSizeChanged, {newSize: this._nativeSize});
     }
 
-    /**
-     * Create a skin by loading a bitmap or vector image from a URL, or reuse an existing skin created this way.
-     * WARNING: This method is deprecated and will be removed in the near future.
-     * Use `createBitmapSkin` or `createSVGSkin` instead.
-     * @param {!string} skinUrl The URL of the skin.
-     * @param {!int} [costumeResolution] Optional: resolution for the skin. Ignored unless creating a new Bitmap skin.
-     * @param {?Array<number>} rotationCenter Optional: rotation center of the skin. If not supplied, the center of the
-     * skin will be used.
-     * @returns {!int} The ID of the Skin.
-     * @deprecated
-     */
-    createSkinFromURL (skinUrl, costumeResolution, rotationCenter) {
-        if (this._skinUrlMap.hasOwnProperty(skinUrl)) {
-            const existingId = this._skinUrlMap[skinUrl];
-
-            // Make sure the "existing" skin hasn't been destroyed
-            if (this._allSkins[existingId]) {
-                return existingId;
-            }
-        }
-
-        const skinId = this._nextSkinId++;
-        this._skinUrlMap[skinUrl] = skinId;
-
-        let newSkin;
-        let isVector;
-
-        const ext = skinUrl.substring(skinUrl.lastIndexOf('.') + 1);
-        switch (ext) {
-        case 'svg':
-        case 'svg/get/':
-        case 'svgz':
-        case 'svgz/get/':
-            isVector = true;
-            break;
-        default:
-            isVector = false;
-            break;
-        }
-
-        if (isVector) {
-            newSkin = new SVGSkin(skinId, this);
-            xhr.get({
-                useXDR: true,
-                url: skinUrl
-            }, (err, response, body) => {
-                if (!err) {
-                    newSkin.setSVG(body, rotationCenter);
-                }
-            });
-        } else {
-            newSkin = new BitmapSkin(skinId, this);
-            const img = new Image();
-            img.crossOrigin = 'anonymous';
-            img.onload = () => {
-                newSkin.setBitmap(img, costumeResolution, rotationCenter);
-            };
-            img.src = skinUrl;
-        }
-
-        this._allSkins[skinId] = newSkin;
-        return skinId;
-    }
-
     /**
      * Create a new bitmap skin from a snapshot of the provided bitmap data.
      * @param {ImageData|HTMLImageElement|HTMLCanvasElement|HTMLVideoElement} bitmapData - new contents for this skin.
@@ -306,12 +238,11 @@ class RenderWebGL extends EventEmitter {
      */
     createDrawable () {
         const drawableID = this._nextDrawableId++;
-        const drawable = new Drawable(drawableID, this);
+        const drawable = new Drawable(drawableID);
         this._allDrawables[drawableID] = drawable;
         this._drawList.push(drawableID);
 
-        const defaultSkinId = this.createSkinFromURL(RenderConstants.DEFAULT_SKIN);
-        drawable.skin = this._allSkins[defaultSkinId];
+        drawable.skin = null;
 
         return drawableID;
     }
@@ -816,12 +747,6 @@ class RenderWebGL extends EventEmitter {
              */
             return;
         }
-        /** @todo remove this after fully deprecating URL-based skin paths */
-        if ('skin' in properties) {
-            const {skin, costumeResolution, rotationCenter} = properties;
-            const skinId = this.createSkinFromURL(skin, costumeResolution, rotationCenter);
-            drawable.skin = this._allSkins[skinId];
-        }
         if ('skinId' in properties) {
             drawable.skin = this._allSkins[properties.skinId];
         }
@@ -1051,8 +976,8 @@ class RenderWebGL extends EventEmitter {
 
             const drawableScale = drawable.scale;
 
-            // If the texture isn't ready yet, skip it.
-            if (!drawable.skin.getTexture(drawableScale)) continue;
+            // If the skin or texture isn't ready yet, skip it.
+            if (!drawable.skin || !drawable.skin.getTexture(drawableScale)) continue;
 
             let effectBits = drawable.getEnabledEffects();
             effectBits &= opts.hasOwnProperty('effectMask') ? opts.effectMask : effectBits;