I think I should try to guess what thier personalities are in the next Pokemon Special..
Black: Entergenic, self-consious of her weight (hey, lucas AKA: Diamond friggin' stuffs his mouth in the manga, why the F**k not?). Tends to be a bit rash about her pokemon too, often in victories she winds up bragging about it.
White: Carefree, and plays fair, what's unique about him it's because he treats his pokemon like family. He's also level-headed, so you don't find him arguments very often.. unless he's with Black.
SP-EC-UL-AT-ION ahoy! Note, I based them off of thier expressions, rather than looks this time. I remember when Green in the manga being based off a random Beauty in the origional games.