The SOB

''I'm not an asshole. I'm a whole ass.''

The one who's treats everyone else wrong without a real cause. Because of this, no one is the Asshole's true friend. If they are part of the Main Cast, the other members of the group might get on them for being an asshole, but the Asshole doesn't care. The Asshole's favorite snack is a sweet, juicy, fresh apple that they eat when they're doing asshole things so we can tell that they're the Asshole.

The Asshole tends to also be another negative role, like the Bully or a Useless Secondary. Assholes can also target just one person to make their Punching Bag while being at least fine with everybody else. If they torment a select group of people or just one for a reason (that could be said to be illogical), then they're the Selective Hater.

Contrast from the Jerk. While the Jerk has legitimate reasons for being who he is, such as those he hates are Pests to everyone else, the Asshole acts rudely without any real reason.