Junk-Man
From superman.nu: Supermanica
Junk-Man
A scrapped collection of robotic parts from a Kandorian junkyard that gains new life and super-strength after a freak explosion. Junk-Man runs amok and threatens to destroy the city of Kandor. Superman enlists the help of the Green Arrow and the Atom in order to stop the metallic menace's intended carnage (Act No. 455, Jan 1976: "Junkman, the Recycled Superstar!").