No. why would he make his own enemy?
That is a STOOPID question. Sonic is a live hedgehog, NOT a "Ultimate Life-Form".
Sonic and the Black Knight is the only Sonic the Hedgehog game that doesn't feature Dr. Eggman.
Dr. Eggman is evil, not Sonic.
No! Shadow was created by Eggman not Sonic.
No, Dr. Eggman is the ancestor of Eggman Nega, as revealed in the Sonic Rivals series. Dr. Eggman Nega despises him due to his constant failures when facing Sonic the Hedgehog, scarring his family name.
No, they are both different villains from the Sonic the Hedgehog series.
The main villain is Dr. Robotnik/Dr. Eggman.
Shadow the Hedgehog can be considered to be his rival. His arch-nemesis, however, is Dr. Eggman.
No, they are not related. Shadow was created by a relative to Dr. Eggman.
He voices as Dr. Eggman, Dr. Gerald Robotnik (Sonic Adventure 2 and Shadow the Hedgehog), and Eggman Nega.
In the Game Gear version of Sonic the Hedgehog 2 Tails does get captured by Dr Eggman and Sonic must try to rescue him.
No, Shadow the hedgehog was created 50 years ago by Dr Eggman's grandfather, Professor Gerald Robotnik.
There are over twenty characters which appear in the video game called Sonic the Hedgehog. The ones which appear most often are Sonic the Hedgehog, Dr. Eggman, Tails Prower and Amy Rose.