Murphy was one of the Joker's henchmen.
History[]
Murphy worked for the Joker during the time Batman was seemingly killed by small-time crook Sidney Debris. When Joker wanted to make sure he was dead by committing a robbing spree, Murphy asked a stupid question. Angry, Joker pushed him in front of Bud and Lou.
When he was patched up, Murphy learned to keep his mouth shut.