SBaby
Dungeon Master
Ash is Goku, Paul is Vegeta.
No, I'd say Paul is Tien (and whatever the rest of his name is). We're not even into the Saiyan arc of Pokemon yet.
Paul is the type of character that starts out as a real prick (for lack of a more accurate term), but might change due to some major event that has yet to happen.
But for Paul, it's going to take alot to change his attitude. He's already shown that losing battles doesn't really faze him. So I don't think it would be a simple loss that would straighten him out. Maybe Ash beating him would do it. But that's just from our frame of reference, so we could be completely mistaken.