"Dr. Ivo Robotnik, also known as Dr. Eggman and Classic Eggman, is an antagonist that appears in the Sonic the Hedgehog series. He is a human and Dr. Eggman's counterpart from another dimension set in the recent past. An evil genius with an IQ of 300, Dr. Eggman will not stop until he dominates the world with his army of mechanized minions.

Basically a past version of his mainstream counterpart from his younger days, Eggman first appeared during the Time Eater incident where he teamed up with his counterpart to rewrite history in his favor, only to be stopped by Classic Sonic and Modern Sonic. Since then, Eggman has continued to follow his ambitions of creating Eggman Land." -- Sonic the Hedgehog Wiki



Debut: "Sonic the Hedgehog [​16-bit]" (1991)