Rustbug

Rustbugs are lifeforms from the Marvel portion of the Generation 1 continuity family.

A rustbug is a tiny Cybertronian lifeform and nuisance that can transform into a primitive wheeled alternate mode for transportation.

Fiction

Marvel Comics continuity

Earthforce

These stories do not fit into the normal Marvel continuity. See Earthforce for details.

Starscream had brought a rustbug hoop to Earth, figuring that if it was useful on Cybertron, it could be useful there too. He was right. Bugged!

Beast Wars: Uprising

Spotting a rustbug close to his foot, Lio Convoy kicked it before it could start nibbling on him, causing it to transform and roll off. Broken Windshields