Against my better judgment, I'll try to come up with a few...
TIK - The class clown. Full of one-liners and random comments/non sequiturs, but never really more than that. Will always be the guy to draw a penis on the board before the teacher arrives. Like a young Will Ferrell.
DM - The guy that is on some of the sports teams, but doesn't hang out with the other jocks. Typically is the one at parties with the guitar playing "Wonderwall" every ten minutes because someone requested it again.
chaos - That one kid that has been growing a full-blown beard since 5th grade. Most of the school thinks he's Jewish. He's the nice kid that nobody knows that well because he's introverted.
Jumpman16 - Star football player so everyone loves him, but has secret hobbies that he hides from the other jocks because they aren't "cool".
Batpig - That asian kid who tutors all the jocks in math, so he gets to be part of the "in" crowd by association. Also organizes the "Magic: The Gathering" games at lunch.
Hipmonlee - The recent transfer student who is pretty nerdy but the girls still think he's "kinda cute" because of his british accent.
cookie - The sarcastic kid who hates everyone else in school because they are "sheep".
Fishy - is the cute hipster chick that is constantly requesting DM to play "Wonderwall" at parties. Scorns all the popular chicks but is secretly envious of them.
Ramblin Wreck - That kid that still brings a whoopie cushion to school in his bookbag just in case he gets an opportunity to use it.
popemobile - The jock that intimidates the nerds for shits and giggles.
chocolate-kipp - Cat lady in training. Is genuinely nice but very introverted. She's the one that you will sit directly next to in like 4 classes but won't know at all, and years later when you hear her name mentioned you'll be like "oh yeah...I remember her name from high school..."
Swaggersaurus - The "all-around" kid that doesn't really fit in a particular category. Plays some sports, was bullied by popemobile in middle school (and is still bitter about it), and participates in the lunchtime Magic: The Gathering games organized by Batpig.
NixHex - The "sensitive guy" that tries so hard to be friends with all the popular people but just isn't meant to be in that clique. People legitimately like him but nobody seems to remember to invite him to the parties.