User blog comment:Slade81/Announcements and other things/@comment-1519608-20140117030505

You can't delete your account. You can, however, rename your account by sending in a Special:Contact to Wikia Staff. However, be careful as Staff will only allow you to rename your account once.

Edit: Wikia has a page about how to change your username: w:c:Community:Help:Changing your username