Dr. Eggman Ivo Robotnik Egg-City Doctor Robotnik, better known as Doctor Eggman, is a video game character and main antagonist of the Sonic the Hedgehog series. He is a Overlander and expert with an IQ of 300 and is comically obese. His character designer is Naoto Ōshima, P.S. Follow Me and You'll Get Followed! (and maybe get a job at Eggman Empire!) HOO HOO HOO!