Doctor Eggman

Dr. Ivo Robotnik, better known as Doctor Eggman, is a fictional character and primary antagonist of the Sonic the Hedgehog franchise.

Dr. Eggman is Sonic the Hedgehog's arch-nemesis, and a rotund mad scientist who plans to conquer the world to build his own Empire. While he has gone through several major and minor appearance changes throughout the series, his in-game designs retain several basic characteristics, such as his egg-shaped body, red-black-yellow clothing, bald head, a onesie, pince-nez sunglasses, and large mustache. Eggman commonly creates machines and robots, including a wide variety of Badniks. Notably in early games, he has also served as a recurring boss, appearing in almost every level piloting one of his created vehicles.

Iago PUC

 * Doctor Eggman (addressed as Doctor Robotnik) is a guest crossover antagonist in Marvel's Spider-Man: Webbed Champion, voiced by J. K. Simmons. He appears in episode "Legendary Universes, Part 3: Unlimited Speed", on which he seeks to regain control of a reanimated EggRobo, and retake Jarvis's robot body, leading him to a intense conflict with Sonic and the Freedom Fighters and Spider-Man's team of Champions. This version of Robotnik is shown to be an amalgam of his counterparts from the 2006 Sonic the Hedgehog video game (from where Robotnik is visually based upon) and the 2020 film (where Robotnik runs his technology company on Earth). He also hates hearing Sonic calling him "Eggman".
 * Robotnik returns in the show's Disney+ follow-up/sequel miniseries Marvel's All-Star Multiverse, voiced again by Simmons.
 * Doctor Eggman (addressed as Doctor Robotnik) appears as one of the main antagonists in Sonic and the Tomb Raider, voiced by Clancy Brown. This version of Robotnik is shown to be an amalgam of his counterparts from the 2006 Sonic the Hedgehog video game (from where Robotnik is visually based upon) and the 2020 film (where Robotnik runs his technology company on Earth). He is also rivals with Jacqueline Natla. Having been banished to the Mushroom Planet following Sonic's battle against him in San Francisco, Robotnik relocated his headquarters and company in there so he may continue plotting his schemes and his revenge on Sonic, which also puts Robotnik in conflict with Lara Croft.
 * John Goodman portrays Doctor Eggman in James Cameron's Sonic Cinematic Universe.
 * His classic counterpart (on the alias of Doctor Robotnik) is an antagonist in Sonic Mania, voiced by J. K. Simmons.
 * Eggman appears in Comic Con Incorporated. A manager in the titular fictional hotel, he serves as the hotel's official coach bus driver.

Official media

 * (1993-1996)
 * Jim Cummings (1993-1994)
 * Deem Bristow (1998-2004)
 * (1999)
 * Garry Chalk (1999)
 * Mike Pollock (2003-present)

Fanon

 * Mark Hamill (Sonic: Rebirth series)
 * J. K. Simmons (Marvel's Spider-Man: Webbed Champion and Sonic Mania: The Animated Series)
 * Clancy Brown (Sonic and the Tomb Raider)
 * Maurice LaMarche (Sonic Unchained)
 * David Kaye (Sonic: Mobius Journeys)

Official media

 * Jim Carrey (2020 film)

Fanon

 * John Goodman (James Cameron's Sonic Cinematic Universe)