K. Vaughan and Steve Dillon, they first appeared in Ultimate X-Men #58. The characters have an unusual heart which pumps out electromagnetic pulses with each beat; this disables almost any electrical system. Their interlinked brain matter also makes them immune to telepathic control, although they are still susceptible to mind readings. In the shared universe of Ultimate Marvel, the X-Men have more than once crossed the paths of other superheroes: Peter Parker is a good friend of the X-Men and is Shadowcat's ex-boyfriend. The X-Men share a wary truce with Nick Fury and The Ultimates, who have been both their best benefactors ("New Mutants" arc) and as adversaries (Ultimate War) in the past. The Ultimate Fantastic Four have met the X-Men in Ultimate X4 and the teams are generally on positive terms. Settings The X-Men live in the X-Mansion in Westchester, New York. Its location was a secret at first, but is now known to the world. It contains the Danger Room, a virtual reality dome in which the X-Men can fight against hard-light holographic enemies. It has been used several times for in-jokes and popular culture references. Once, the junior X-Men fought the Brood, and for recreation, Nightcrawler simulated scenes similar to Pirates of the Caribbean and The Lord of the Rings. Genosha is an apartheid state in which mutants are discriminated against. Krakoa is an island not far off Genosha, where Mojo Adams' Hunt for Justice reality show is held. Muir Island is an island in the north of Scotland and the location of Dr. Moira MacTaggert's lab. In other media In the video games X-Men Legends and X-Men Legends II: Rise of Apocalypse, the characteristic tight black-and-golden costumes of Ultimate X-Men are the default outfits of the X-Men. The traditional costumes can be unlocked as throwbacks after the player has unlocked them by completing acts within the game. Additionally, many of the other characters (such as the Brotherhood) have their Ultimate costumes as their default outfit. Characters in these games who had not yet appeared in Ultimate X-Men at the time that the games were released either appear wearing their Earth-616 ('classic') costumes or appear in a new costume that is in the same black-and-gold style as the Ultimate X-Men suits. In the X-Men: Evolution animated series, Wolverine wears his Ultimate X-Men look from season 3 onwards. In the final episode Ascension, future adult versions of the