Wolfgang was a terran in service to crime lord Fagin. He and his "girls" acted as Fagin's corpse disposal unit; Wolfgang even had the skills to disguise a murder scene as an "accident". The Tarsonis Police Force rarely investigated crimes in the Gutter, but they could not ignore corpses, even with all the bribes Fagin paid them.
Near the end of the Terran Confederacy, Wolfgang stopped answering his fone, something he always used to do. It is likely that he was murdered by Fagin or one of his subordinates; a distinct possibility given Fagin's psi-screen induced psychosis.