Musical acts with the ugliest fans?

Which artists has a fan base that is just... unattractive? I've been to a lot of concerts and I have to say that for me, it's a tie between Fallout Boy (overweight women with piercings and the kind of men who look like Comic Book Guy from the simpsons) and Korn (biker freaks who live in tattoo parlors). Which fanbase is just full of uggos?