He's one of the Multiverse's worst nightmares: a version of Eggman who took over Sonic's body, gaining all of the hedgehog's strengths in combination with the dcotor's smartness, which was only improved by his new speed of thought.

He mantains Eggman's old personality, and some traits even more exacerbated. He's now even more short-tempered, thanks in part to his new speed, cocky and narcissistic beyond any reason and also much more immature and prone to throw fits of rage whenever things don't work out as he thought. To mess with others who knew Sonic, he often adopts a disturbingly twisted version of Sonic's usually humorous side which only makes him sound much more threatening and creepy than usual with his dark jokes and bitter remarks. He still has a grand view of himself and his projects, reveling in how the world became a true utopia under his leadership, and now shows even less empathy than before, viewing others as nothing more than dirt under his feet.

Likes:
-Running
-Ruling
-Designing and inventing robots
-Fried chicken
-Machinery
-His empire
-Telling others what to do

Dislikes:
-Losing
-When his plans fail
-Sonic
-Anyone who betrays him

In another dimension, this version of Eggman was much more cunning than the regular one and hellbent on taking down Sonic, not caring if he had to destroy the world he sought out to conquer to do so. To achieve such goal, he worked on a performance enhancer to assume via oral consumption which gave him super strength and resistance. These made him a much difficult threat to take down, but also gravely injured his physical state, devouring his muscles and forcing him to move on four robotic arms he built. But that didn't stopped him from continuing to create more powerful and more risky versions of the power enhancers which soon devoured his body so much that he was forced into a containing cocoon in order to protect himself and soon ahd to use an artifical breathing machine since his lungs were too injured to sustain him. Blaming Sonic for his condition, affirming that he should've just died earlier instead of forcing him to destroy himself, he devised his most dastardly and disturbed plan ever. He managed to capture Sonic and switch brains with him, gunning his older body and effectively killing his eternal foe. Renamed himself the Superior Eggman and having taken care of his greatest enemy, he took no time conquering his world and subjecting anyone who lived there to his cruel iron fist rule.

He lives in Robotnik Castle, a huge residence he built over what remained of the Presidential Palace

He has Sonic's body (much fitter thanks to the enhancers which also turned his fur of a darker blue) and Eggman's trademarked Red eyes over a black sclera.

He wears a smaller version of Eggman's classic jumpsuit

He wears tiny glasses, a pair of protective goggles and a backpack which contains his four extendible arms