I wouldn't worry about it though. I think that pretty much most of fanpop would prefer a different username to the one they have now. I don't know that for a fact obviously, but I've come across a lot of peeople who want to change their username.
It's why so many people make new accounts, but I don't advise that you do that. Because you'll only lose everything you've done and have to start over. And tbh, no one's that bothered about your username.
No you can't change it. The only way to make a new username is to make another Fanpop account. Now you can delete the one that you have, but that's something that you probably don't wanna do. If I were you I would.
