Doctor Ivo "Eggman" Robotnik (Legacy)

Pre-Exile
Ivo Robotnik was a scientist who looked up to his grandfather, Gerald Robotnik, and wanted to better assist the lives of everyone on Mobius. He was best known for developing machines and practices that would assist disabled people, such as prosthesis, monitoring systems, and more. He inherited most of Gerald's research data, as well as heavily encrypted files that he wouldn't be able to decipher until much later, which provided him insight into the Chaos Emeralds, Gaia Temples, and research regarding the Fourth Great Civilization.

After time perusing through Gerald's research, he wanted to attempt to study the Chaos Emeralds to try and harness their potential to the betterment of society, similar to the work Gerald did earlier in his career. However, he was not able to study the Emeralds that were currently known on Mobius, as they were sanctified within their respective temples and monitored by each nation. This led to him breaking in and researching the Emeralds discreetly during gaps in shift monitoring.

At some point in his career, an tragedy occurs, which labels Robotnik as an irredeemable threat to Mobius, resulting in his exile from society, and his eventual adoption of the title of "Dr. Eggman."

Legacy's Prelude
Dr. Eggman is shown to be monitoring the activities of Sonic the Hedgehog and Tempest the Dolphin, sometime after their trek through the Green Hill and Marble Zones. He continues to have their progress tracked as they proceed through the Labyrinth Zone and begin to enter his base in the Scrap Brain Zone.

He meets and talks to Sonic for the first time when the former reaches him, having kidnapped Tempest and threatening her as his hostage, baiting Sonic into a trap filled with explosives.

Appearance
A tall and overweight human. He's bald, with his most distinguishing trait being his large handlebar mustache and big red nose. He wears a red jacket with white stripes down the sleeves, and a set of two buckles with gold clasps on each side, white gloves, and black jumpsuit pants.