Yellow is a shy but honorary cool kid. he'd be the one that goes along with friends just for the company, even though he's not feelin' the situation; he's the kid that doesn't drink at the party while all his friends do.
Spaghetti is the pretty yet aloof girl that no one really knows about. she does her own thing, doesn't let anyone too close, but is still a nice person in spite of her personality.
Corny is like the dumb, goofy jock. you can't hate him, because he's dumb and adorable, but he generally has you questioning okay what is he doing??