|Dr. Ivo "Eggman" Robotnik|
|First Appearance||Sonic the Hedgehog (1991)|
|Skills||Floating, racing, building machines, IQ of 300|
Dr. Ivo "Eggman" Robotnik is the primary antagonist of Sonic R, and the Sonic franchise as a whole. He is a genius, power-hungry scientist striving to take over the world, and employs numerous schemes to achieve this end. His arch-nemesis is Sonic the Hedgehog.
Dr. Eggman is extremely obese. His body is rotund, and his head heavily resembles an egg (hence his name). His head has goggles, glasses, a long mustache (orange in newer series, brown in older series), and a bald head. He has black pants and shoes, along with a red shirt.
Dr. Eggman is a genius, with an IQ of 300. His intellect is rivaled only by Miles "Tails" Prower, who also has an I.Q. of 300. Despite his vast intelligence, he is prone to arrogance and shortsightedness regarding his schemes. His relationship with Sonic the Hedgehog is usually that of two bitter enemies (of all theories, one of the most common is Sonic and Eggman were friends, but Eggman became power-hungry and the two became enemies), but the two occasionally make up, even be it for a short time. Eggman has often joined Sonic to face a greater threat, usually one that puts the world at stake (as he believes the world is his and his alone to conquer). He usually fights Sonic in mechs of his own creation, although he has proven himself to be surprisingly fast on foot. He owns the Death Egg, a galactic base of operations and a shout-out to the Death Star.
As the games went on, Dr. Eggman went from a credible threat to Sonic's bumbling foil, but he still occasionally pulls out an ace.
Eggman is one of the first to join the race before the event of Sonic R. Its possible he created the race, but its unknown since it is never said whether he did or not. Also before the events of the game, he creates three/four robots to help himself win: Metal Knuckles, EggRobo, Tails Doll, and Metal Sonic. He watches from a video feed as Sonic and Tails join the race.
Later, Sonic and co. have finally beaten all of Eggman's robots and obtained the Chaos Emeralds. After unlocking all characters, Eggman is unlocked. Finally racing in Radiant Emerald ends the game completely, and signifies that Eggman has been defeated.