|Doctor Ivo "Eggman" Robotnik|
|Name||Doctor Ivo "Eggman" Robotnik|
|Franchise||Sonic the Hedgehog|
|Vehicles and/or Gadgets||Eggmobile|
|Occupation||Leader of the Eggman Empire|
Dr. Ivo Robotnik, better known by the alias Dr. Eggman, is a human and the arch-nemesis of Sonic the Hedgehog. The large scientist with an IQ of 300 dreams of dominating the world, but his constant plots to create his Eggman Empire are always thwarted by Sonic and his friends.
While the doctor's plans initially consisted of building up incredible armies by turning animals into robots and using them to dominate the land, Dr. Eggman's schemes have since branched into much more global threats as he built war machines, used nuclear devices to threaten entire nations, and even relied on mythological and ancient deities bent on destruction to achieve his goals. Eventually, the mad scientist has gone as far as to target the entire universe and cooked up schemes to control time and space itself.
While all these plans end in failure thanks to the continued efforts of Sonic and his friends, the mad doctor is somehow always able to slip away from certain death or imprisonment and escape at the last moment, making him a constant threat to the universe and a thorn in Sonic's side.
- Dr. Eggman is voiced by Mike Pollock, who voices him in the Sonic X and Sonic Boom animated series and all Sonic games released since 2005.
- Dr. Eggman makes a cameo in the Ghostbusters 2016 story pack in the Breaking the Barrier level as a parade balloon.