Dr. Robotnik (SUT)

Dr. Julian Ivo Robotnik (Now known as Dr. Eggman thanks to Sonic) is the Main Antagonist in Sonic Ultimate Timeline and will do anything to win against Sonic

Early life
Dr. Robotnik was once thin, tall, and a part of the American government on Earth. Once Sonic was discovered, Robotnik set his plan into action, but was defeated, and sent to another dimension.

After a while, Robotnik passed away and was absorbed into the Chaos emeralds as they sucked the evil into them, thanks to Dr. Ovi Kintobor.

Unfortunately, an incident with a rotten Egg, and Kintobor falling into his machine, Robotnik came back to life, taking over Kintobor's body, thus causing the events that led up to here happen again

Robotnik then learned what happened to his Planet and wanted to bring it back in control, but he stumbled into the War between Overlanders and Mobians. Robotnik then decided to help the Mobians, thus gaining their trust, which then caused him to betray them a couple weeks after the war.

Robotnik now had 99% of the planet under his control, that one percent being unable to control thanks to Sonic the Hedgehog.

Desperation for control
While he had almost all of Mobius in his grasp, one thing kept getting in the way, a hedgehog known as Sonic the Hedgehog, he always ruined his schemes to fully dominate the planet and this made Robotnik angry. As days turned into weeks, and weeks into months, he still couldn't destroy him, this drove him crazy, often making more deadly schemes such as his Death Egg, taking over the Little Planet, and using the red chaos emerald to build weapons of mass destruction, all of which Sonic stopped. Eventually he started his EndGame which brought upon his downfall.

Though it wasn't long until a new Robotnik entered the battlefield to replace Robotnik Prime, and was more of a threat than his previous self, conquering most of Mobius, and a while later, Mobius in it's entirety, though he lost control of Mobius both times thanks to a blue individual...

After a while though.. Eggman went low for a while...

Comeback
After being silent for a while, Eggman did an all out attack on the Freedom Fighters, and almost won, but Sonic managed to send him packing. After that, Eggman donned his old tattered cape (The one from the classic games) and started working on new projects...

One night, the mad scientist accidentally found 2 different universes, the Mega man universe, which he's familiar with, and the Universe Darkwing Duck resided in, and planned to take over the worlds, with the help of the villains in their respective Universes.

Unfortunately for Eggman, Sonic found out about this, and attempted to foil his plans, with the Help of Tails, Darkwing Duck, Mega man, and Proto man.

Knowing that he couldn't rule each world separately, he decided to merge the worlds along with his into one, and succeeded, though it didn't cause too much destruction due to the newly formed Fate Changers, and was swiftly defeated after that.

He tried again with Multiverseal domination, aiming to conquer all Multiverses (Something that the First Robo Robotnik tried to do) but was defeated again by the Fate changers and Discsonic.