Dr. Eggman

Dr. Eggman, also known by his real name Dr. Ivo Robotnik, is a persistent enemy and the arch nemesis of Sonic the Hedgehog, much in the same manner as Bowser opposes Mario. In Mario & Sonic at the Olympic Games, he is voiced by Mike Pollock. The doctor is a genius with an IQ of 300.

''Mario & Sonic at the Olympic Games
Dr. Eggman, as well as several other Sonic the Hedgehog series characters, appears in the Olympic crossover game Mario & Sonic at the Olympic Games. He is a Skill player, despite his rather large size.

''Mario & Sonic at the Olympic Winter Games
Eggman is confirmed as a returning character to the upcoming Mario & Sonic at the Olympic Winter Games, and appeared in the first trailer for the game along with Sonic, Mario, and Wario.

In the DS version of the game, in the Adventure Tour mode, he is going to be one of two main antagonists, along with Bowser. Him and Bowser are going to try to stop the 2010 Olympic Winter Games by capturing all the Snow Spirits.

Profile
''Although the devious Dr. Eggman has great Skill-based abilities, he also is quite powerful. His huge, lumbering frame doesn't give the impression that he would be good at gymnastics, but believe it or not, he can handle the trampoline and vault quite well.''

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Trivia

 * Dr. Eggman has a bulbous pink nose similar to Wario, Waluigi, Dr. Crygor, Jimmy T., Jimmy P., and Booster.
 * Dr. Eggman and Bowser are similar in a few ways:
 * They're both portrayed as major villains.
 * They both kidnapped a female character at least once.
 * They both had to team up with their arch-nemesis at one point to defeat a bigger threat.