Formerly the first Asteroid M before crashing into San Francisco Bay, Utopia was brought back to the surface by the X-Club under the direction of Cyclops. Seeing no other option, Cyclops decided to move the mutant population (then stationed at Graymalkin Industries) to this island and off of U.S. soil to avoid further persecution by the civilian population and the oppressive government under the reigns of Norman Osborn with his own private Avengers and X-Men.
Utopia, declaring itself an independent nation, thrived as the last remaining mutant threshold which housed the combined forces of the X-Men, New Mutants, X-Force, and the X-Club. Negotiations between Cyclops, Magneto, and the mutant king of Atlantis Namor have also made Utopia the home to all Atlanteans.
Utopia came under attack by several outside forces including the assaults by Selene with her army of dead mutants, Bastion with his Sentinel forces, and the recent skirmish with a possessed Juggernaut.
Interestingly, the force that shattered the small island nation was not an external conflict but an internal schism between Cyclops and Wolverine incited by the newly managed Hellfire Club. Due to irreconcilable differences Wolverine lead a group of mutants to a newly created school located in New York. Cyclops and his band of mutant "forces" remain on Utopia.