Mobius is the fictional,earth-like planet from the Sonic the Hedgehog Universe. It is best seen in the SatAM and comic book series, which better shows its inhabitants and land marks. Its most familiar land mark is the Floating Island. Mobius was ruled by the Acorn Monarchy, until Dr. Evo Robotnik overthrew the King (who was banished to the void) and took over.
The Freedom Fighters, lead by Princess Sally Acorn, eventually killed Robotnik and reclaimed the throne.