|Family||Gerald Robotnik (Grandfather)|
Maria Robotnik (Cousin)
|First Appearance||Sonic the Hedgehog|
Dr. Eggman is the alias of Dr. Ivo Robotnik, Sonic the Hedgehog's evil nemesis and the main overall villain of the series, appearing since the beginning and throughout the series. He appears in every single game in the series with only one exception, Sonic and the Secret Rings. He also has his own game, Dr. Robotnik's Mean Bean Machine.
He is best known for his great intelligence and genius, particularly when it comes to robotics and is always designing new robots and vehicles. His overall goal is to conquer the planet to create his very own utopia by force which generally involves him industrialising the planet.
Originally in Japan Dr. Eggman was always known by this name, by in other localisations of the games, such as Europe, Australia and America, his name was known as Dr. Robotnik. After the release of Sonic Adventure, all regions used the name Dr. Eggman.
 Theme Songs
- "Theme of Dr. Eggman"
 Voice Actors
- Deem Bristow (1998-2004)
- Mike Pollock (2005-present)
 Appearances in other Media
Dr. Eggman appears in the following animations:
- Adventures of Sonic the Hedgehog - Dr. Robotnik (AoStH) full article
- Sonic the Hedgehog (SatAM) - Dr. Robotnik (SatAM) full article
- Sonic the Hedgehog: The Movie - Dr. Robotnik (Movie) full article
- Sonic Underground - Dr. Robotnik (Sonic Underground) full article
- Sonic X - Dr. Eggman (Sonic X) full article
Naturally in the animated series' Dr. Eggman plays the role of the villain, going by the name Dr. Robotnik in all series' except for Sonic X. In the SatAM cartoon, Dr. Robotnik has already taken control of the majority of Mobius and has an assistant, Snivley. In Sonic Underground the situation is similar in that Dr. Robotnik has already assumed control, only this time by usurping the throne from Queen Aleena.
Dr. Eggman appears in the following comics:
- Sonic the Hedgehog (Archie Comics) - Dr. Robotnik (Archie) full article
- Sonic the Comic - Dr. Robotnik (STC) full article
The Archie comics are largely based on the SatAM cartoon, so Dr. Robotnik's position and origins are largely the same. In Sonic the Comic, Dr. Robotnik, formally Dr. Ovi Kintober, was originally a good scientist who was trying to rid the world of evil by absorbing all the evil into the Chaos Emeralds. He was also a friend of Sonic and in this version of the story was the one who helped him gain his amazing speed. However, there was an accident involving Kintober, a rotten egg he happened to be holding and the ROCC (Retro Orbital Chaos Compressor), the ROCC being the machine that was storing the Chaos Emeralds and the evil energy they had absorbed. The machine exploded, and Kintober absorbed the evil in the explosion, and took on the characteristics of the egg. In Issue 8 of the comic, Sonic, Tails, Johnny Lightfoot and Porker Lewis were sent 6 months into the future by Robotnik, giving him a 6 month window to conquer the planet.