Ea The Wise!
Created by Ivan Brandon and Niko Henrichon, Ea is one of the Celestials which created all of Marvel’s Universe. But while the other celestials all did important and noteworthy things, all Ea did was sit on Machine Man’s shoulder and make fun of him.
Not that we ever got to see any of these taunts, of course. There’s every chance that Ea doesn’t actually exist whatsoever, and is simply a figment of Machine Man’s imagination. He certainly vanished just as soon as Machine Man sorted out some of his mental issues – maybe he’s not real! We’ll never know unless Marvel bring him back…