WARNING! Spoilers for Sonic the Hedgehog 3Everyone knows that Sonic the Hedgehog's main villain is Dr. Eggman, but there's another character who makes a better opponent for the Blue Blur.

Dr. Eggman and Dr. Eggman Nega in "Mario & Sonic at the London 2012 Olympic Games" (VG) Dr. Eggman and Dr. Eggman Nega in "Mario & Sonic at the Olympic Games Tokyo 2020" (VG) Dr. Eggman and Dr.