Overmind (The Dawn of Monster Kid)

Overmind is an extraterrestrial robot and a major antagonist in The Dawn of Monster Kid, serving as the main antagonist of season 1, one of the two main antagonists of season 2 and the secondary antagonist in season 3. He is a sentient alien robot, one of the most feared beings in the universe and one of the archenemies of Max Stewart.

Biography
Overmind was created as a weapon by an unknown alien race, but turned on his creators and went on a rampage, destroying any biological lifeform on any planet.