Dr. Eggman is a character in the Sonic the Hedgehog series. He first appeared in Sonic the Hedgehog. He is also called Dr. Ivo Robotnik. He is the main villain of the Sonic the Hedgehog series. He has an IQ of 300, and always tries to make Robotnik Land, but gets thwarted by Sonic the Hedgehog, his main rival, every time. His plans range from turning animals into robots to using terrible ancient beings to destroy the world.