日本新番动画动漫Sonic the Hedgehog: The Animated SeriesThe show takes place on a planet called Mobius sometime in its 33rd century; Mobius is largely populated with anthropomorphic animals. A mad warlord and former scientist named Dr. Julian Ivo Robotnik (voiced by Jim Cummings), aided in the conquest by his assistant and nephew Snively (voiced by Charlie Adler), invaded and conquered Mobotropolis (The capital city of Mobius and the seat of the King of Mobius) with an army of robot soldiers called SWATbots. Dr. Julian Ivo Robotnik, leader of the Mobotropolis War Ministry, led the King's SWATbot army to victory in the Great War. He was to be appointed Minister of Science by the King of Mobius, Maximillian Acorn, who had decided to close the War Ministry and dismantle the SWATbots following the War. However, Robotnik, a liar and insatiable sadist, overthrew the Kingdom through a planned coup d'état. Capturing the palace, Robotnik declared himself to be the new King. King Maximillian is never seen or heard from again. Robotnik soon captured most of the citizens, including an intelligent old hedgehog named Sir Charles Hedgehog (voiced by William Windom) and his crowning invention, the Roboticizer. The Roboticizer, intended to prolong life, changes living creatures into robots. The Roboticizer also has the effect of robbing an individual of their free will; so Charles tried to destroy it. He failed however, as Robotnik stole the plans to the device, built his own, and used the device against the captives. (including Charles himself) He then turned his army loose on the world, "roboticizing" any who crossed his path. Some citizens managed to escape the coup, and fled to Knothole Village in the Great Forest to hide from Robotnik's army. Under Princess Sally, (the King's only heir) they formed a group called the Freedom Fighters to (hopefully) restore Mobius and end Robotnik's rule. The Knothole Freedom Fighters foil Robotnik's schemes wherever they can, but they fail to make much difference at large as Robotnik literally rules the planet with an iron fist. In the first season, there is constant implication that Robotnik's overuse of the planet's resources forces him to search for more usable energy.