3 guys come to mind.

We had one guy who was super into being Greek, except he immigrated to the US from Canada. He would doodle the borders of the Byzantine Empire on stuff all the time. He was in the marching band with me, played the clarinet, and absolutely sucked at marching. Whenever a girl would try to correct his marching, he would get this coldly evil look in his eye and softly speak to himself in greek. He would always deliberately stare girls in the tits when he spoke to them.

We had another guy who always ran like naruto, had big, frizzy hair. Never showered, and spend gym class practicing waterbending. At least he was chill to talk about ATLA with, so he wasn't really a bad dude.

We had a third dude who I actually really enjoyed who had a white guy fro and dressed like he was in the 70s and always wore sunglasses. He'd walk around with this disco-ass strut where he leaned back ,bounced like 6 inches with each step and would shoot finger guns at people.