Alternat Form:hot rod (what else?) Later he turned into a winnebago(?!) when he gained the Autobot Matrix from Galvatron.

Function: Infantry (Hot Rod) Autobot Leader (Rodimus Prime)

Hot Rod was the impetuous roadster that was destined for greatness. He inadvertantly caused Optimus Prime's death during the siege of Autobot City. He later regained the Autobot Matrix of Leadership from the newly formed Galvatron and was instantly turned into Rodimus Prime, winnebago leader of the Autobots. It is commonly believed that he and Arcee were more than just friends.