Doctor Trap was once Larry Trapp, a man who lost his beloved girlfriend Caroline Anders who was killed in the crossfire of a battle between Justicte Experince and their enemies, The House of Pain. He blamed all the parties involved for her death and swore revenge on them all. He later went about trapping and killing various members of both teams including the leader of the Justice Experience, Walter Chase, who was known as The Acro-Bat. He killed Chase by ripping out his throat with his cybernetic jaws and left him on his kitchen floor for his family to find; Walter's eldest daughter Cameron was the first to find him. This incident, and by extension Trapp himself, is responsible for causing Cameron Chase's deep seated hatred of super beings.