He is arrogant, quick tempered and an all round smart-ass jerk. He has often turned his back on those who have needed him just to meet his own selfish needs, but he says he's trying to change. Start over and forget the darker times.

Sure, every now and then we see a good side of him peek through all of the bravado, and he is a hell of a shot with his pistols (named 'Jim' and 'Matilda') though nobody actually knows why). As for treasure or any other way to make a fast buck - no matter how challenging, Billy is your man. The big question is, when trouble is on its way can he really be trusted?