Villain of the Week- Metallus

From The Villains.Fandom Wiki- Metallus first appeared in the 1960s Space Ghost series. There he appeared as a galactic space conqueror who had an armada of killer robots and missiles ready to invade a nearby planet, but was thwarted. In another episode, Space Ghost's pet monkey, Blip, removed Metallus' head to find that there was nothing underneath. He later joined the Council of Doom to help destroy Space Ghost, but ultimately failed.  Back to me:

I believe that Metallus is Space Ghost arch-enemy.  He is easily the most powerful villain of Space Ghost's rogues and one of the smartest.