Doctor Eggman

Eggman, also known as Doctor Ivo Robotnik, is a mad scientist who seeks to steal the mystical Chaos Emeralds, destroy his archenemy Sonic the Hedgehog, and conquer the world. Eggman and his "Badnik" brand of military robots serve as bosses and enemies in the Sonic platform games. His distinctive characteristics include his red-black-yellow clothing, baldness, pince-nez sunglasses, and large mustache.