Every preppy. ... this is hard. (゚⊿゚)
So hard I can't list a top 5.
Bif, Bryce, Clint/Henry, Constantinos, Duncan, Gord, Hal, Ivan, Norton, Parker. There's more, but whatever.
And what's that? You didn't ask for least favorites?
T·O·O·BAD!
Algie (well, to be fair I don't like any of the nerds), Angie, Chad, Dan, Gary, Gloria (all the little brats, really)... I could go on buuuuut...