I also really liked Billy. Okay, perhaps the telegraphed redemption arc was a little obvious (but then what isn't?) but it was a really visually cool and engaging way to see his backstory. And his actor, man, that fella can pull off a hundred different facial expressions. Obviously he completely smurfing nails doucheface, but he also conveyed manic, terrified, sad, furious and just downright evil with just the look on his face.