Though he precedes Overlord's appearance by about three years, Omega Supreme might be seen as the Decepticon's rough equivalent for the good guys. Though he's assumed different alternate modes over the years, his most common is that of a tank which guards a rocket ship with its own rocket base. In the currently ongoing IDW comic book, Omega Supreme's base mode served as the Autobots' new headquarters following the destruction of a previous base by the Decepticons. While humans could probably make a place for themselves inside, it may not have been the most spacious accommodations for a giant robot army, though it at least had room enough to keep Megatron hostage as the Autobots went on about their business. But by this point, the size difference becomes largely irrelevant, with an emphasis on "large"...