For now, the only episode in which he has a speaking role is in "Pre-School". In this episode he along with the other 6th graders promise to defend The Boys from Trent Boyett in exchange for a picture of Stan's mom's boobs. After the boys gave the picture (which was actually a picture of Cartman's ass), the 6th graders try to fight Trent but fail.
Not much is known about his personality. We can assume that he behaves the same as the other 6th graders, like spending time bullying children younger than him.
He has curly brown hair and wears a dark blue shirt with orange collar, light brown pants and black shoes.