From Homestar Runner Wiki
Mitch Overlord is a grey-skinned, blue-robed, metal-jawed "bad guy" in the short-lived Limozeen: "but they're in space!" cartoon. The back stage passes for the band's show on Groupulon 5 were won by Mitch Overlord; he was the one million, six hundred eighty-five thousand, four hundred twenty-first (1,685,421st) caller in a Galactic Radio contest. His right arm is cybernetic, and engraved with the word "MITCH!"
"but they're in space!"