History
The second Microtron Roboid was a duplicate of the original Microtron who had served with the Micronauts until his 'death'. Like his companion Biotron though, the duplicate had a completely different personality to the original and, though created to serve with them on the HMS Endeavour II, never really became a part of the team. The two Roboids horrified the crew by using technology developed in Baron Karza's Body Banks to repair injuries. They eventually returned to the ruins of Homeworld.