User blog comment:GrandMethuselah67/Character Sheet 19: Ramses, the Great/@comment-4867780-20150725034018/@comment-26322734-20150725045243

He uses mortals because since the source of his power derives from Hyperspace, he's not really at the absolute peak of what he can do while he's in the Multiverse. Given the nature of the multiverse, the Starspawned Lords' powers are stifled due to the fact that it actually takes effort to keep the connection going. This applies doubly seeing as how Ramses is (possibly) just an avatar. Not only that, but the very event that allowed the Starspawned Lords to touch Ramses in the first place ("the stars are right") is a fixed point in time, so Ramses would be weaker in other universes than his native universe.