Junkman

Junkman was a mechanical being, not organic, and his different parts were old and in disrepair. He worked on a planet used by various civilizations as a dumping ground for old and useless equipment. He bargained with Dr. Smith for parts from the Robot in return for food. In the end, he took on so much of the Robot's personality from the transplants that Will was able to convince him to return to the planet after he stole the Jupiter 2.