King Sonic the Hedgehog was the ruler of a possible future version of Mobius, husband to Queen Sally Acorn and father of Princess Sonia and Prince Manik. When a crisis occurred that threatened to destroy all of Mobius, King Sonic traveled back in time to fix it and save his planet, but it cost him his family and Mobius was then ruled by King Shadow until he dethroned him with the help of Tails, Knuckles and Lara-Su and later remarried Queen Sally, leading them to have two children once again. Following Shadow's return at the end of Five Years of Peace, Sonic became the leader of the Future Freedom Fighters.