Chumpp use to be a bodyguard of two criminal twins, Joe and Moe Dubelz. He tried to kill Hitman, when Hitman barged in to the funeral of Dubelz twins father, Robert Dubelz. He didn`t succeed, `cause Hitman killed him.
That`s all that is known about him.
Chumpp was created by Garth Ennis and John McCrea.