Muckman was a garbageman named Garson Grunge who was mutated into a walking pile of garbage when Bebop and Rocksteady poured mutagen on him. The accident also mutated his friend Joe Junkee. They took the names Muckman and Joe Eyeball . They became allies of the turtles after realizing that Bebop and Rocksteady caused their mutation. Muckman and Joe Eyeball were also going to be cured after Shredder had been defeated, but the two garbage mutants said that they were used to their mutant forms. He appeared in the 1987 TV series episode Muckman Messes Up.
Muckman was given a voice similar to that of Jackie Gleason's character Ralph Kramden from the classic television series "The Honeymooners". Joe Eyeball was given a voice similar to the Art Carney's character Edward Norton from the same show. He also made a slight appearance in the 2012 episode Invasion of the Squirrelanoids on a poster on Mikey's wall in his room.