He used to work for Grim Reaper. He tried to attack Dark Knight, but had to teleport away from getting killed. That was literally it. He didn't show up again. Later though, an unknown killer had killed him, and he was left in a bunker owned by Hitler. His last words were "I've changed, and he said "it doesn't matter, a point must be proved"". Then he died, and the killer got away with his crime. The killer was later obvious as Officer Ganson.