Eggman Nega

Dr. Eggman Nega, also known as just Nega, is a major antagonist in the Sonic the Hedgehog franchise. He is a human scientist that appears as one of the two main antagonists (alongside Dr. Eggman) of Sonic Rush and Sonic Rush Adventure, and the main antagonist of Sonic Rivals and Sonic Rivals 2

Friends

 * Dr. Eggman

Enemies

 * Blaze the Cat (Arch-Nemisis)
 * Sonic the Hedgehog
 * Miles "Tails" Prower
 * Marine the Raccoon