User blog comment:JackFrost23/How do I get pictures I've posted off the Wikia server?/@comment-429401-20100713010548

When you signed up & posted material you released it into the wonder that is the internet. Try contacting staff by special contact from the wiki. They may be able to remove specific images if a good reason exists to do so (changing your mind is not generally a suitable reason, as you signed a copyright release by posting them).

In general once posted onto the web complete removal is not possible as even with removal from Wikia several copies may exist on other servers such as Google and other mirror sites of various wikis.