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Dr. Ivo "Eggman" Robotnik, more commonly known as Dr. Eggman, is the main antagonist of the Sonic the Hedgehog video game series. Sporting an IQ of 300, the Doctor's ambition is to take over the planet and establish the Eggman Empire. His plans have been so far thwarted by Sonic & friends, or Robotnik's own plans backfiring on him. In the past Robotnik would rely solely on his robots, called Badniks, to defeat Sonic and aid in his gathering of the Chaos Emeralds, which are seven extremely powerful gems, to conquer the world. More recently however, the Doctor has deviated from using armies of robots and instead attempts to unleash various mythical beasts and/or gods to help in his takeover of the planet. These sorts of schemes are the ones to backfire, as Robotnik can't seem to control what he has awoken for very long. The Doctor will then usually choose to flee or assist Sonic & friends in defeating the monster.
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