Mutant Biker Gang
The Mutant Biker Gang are a group of crazed bikers who like to cause trouble in Cosplay City. In the first episode, they interupt Mayor Light's speech and begin scaring people off. Of course, as pretty tough as they can be, they are all also scared of Dolmeck. After the first half of series, the gang don't appear anymore, so they probably ran off, after their many defeats.