Regimus Prime is a SmashMech version of Reginald. Following the spiritual sacrifice of Optimus Prime and Rodimus' conversion back to Hot Rod and the rise of Danielmus Prime, a new faction, the "AutoMiis", led by the heroic commander "Regimus Prime", cruised through the outer limits of space. During this time up to today, he had one thing to accomplish on his mind: to defend the universe from Dark Reinald and the DeceptiMiis, along with PM Red and the Decepticon Republic. For this multi-role do-gooder, nothing is more important than peace and freedom, as he will sacrifice all for saving the peace time. He has flown in many space battles, and had beaten every single challenge he had faced over the years. Now, he seeks that the interstellar war will end at the very moment when he engages in a final duel against Dark Reinald and PM Red!