Arch-nemesis of Sonic the Hedgehog and one of the Org's scientist
Canon bio
In childhood, the young Ivo Robotnik looked up to his grandfather, Professor Gerald Robotnik, and believed him to be a great man, who had done his best to help mankind and was unfairly executed. From this, the young Ivo likely viewed the government as corrupt, and in any case, decided to follow in his grandfather's footsteps to become a scientist. But somewhere along the line, he became obsessed with the idea of a world under his rule, and using his unmatched mechanical genius, began his plans. Long before the first Sonic game, Eggman met the hedgehog, and the two became instant rivals. Over the years, he created several deadly creations, and, realizing the hedgehog's determination was as fierce as his own in overcoming them, gained a respect for his adversary. When he accidentally found his grandfather's diary, he was led on an adventure that would show him that his grandfather was perhaps not as innocent as he had thought. Usually Eggman will try to side with a really poweful being, but it will always end in betrayal. Recently, his plans have been increasingly hindered by outside forces, but this has given him chances to show his hatred of things that would threaten the entire human race, and consequently threaten his plans.
Appearence in Ultima
Eggman works as one of the top scientist along with Dr. Animo and Dr. Doofenshmirtz, creating and building new technology and weapon for the Org, even trying to revive the Fabrication machine to follow their command until it failed terribly. Recently, Eggman make his major role in the Chaos Emerald arc, eventually he also failed to get Nick's soul.
Despite this, he was made a member of the Big Five, and his entire robotic army has been added to the Org's forces.
Eggman also appeared in Ultima classified where he secretly assignt Megatron to investigate on the world of Back to the future, only to be Megatron was been possesed something from the other side, mysteriously doing Eggman and his partner in crime, Van Kleiss to do his biding as so far is unknown yet, possibly to outrun control the Orgs.