An image of a character usually ripped from its original source and cropped onto a transparent background for use elsewhere.
Also known as an "Alpha Channel".
When you upload, you may get a "File Not Found" Error. We are currently contacting our web admin in order to fix the issue, but until then, we have a work-around that has proven to work for the time being. If you wish to upload, please save the image to your computer, then add it to the upload screen through the "Browse" button. We hope that works for now and will make a notification when the issue is fixed.