(Strom) X-Factor Untersuchungen, New York City (ehemaligen) Professor Xaviers School of Gifted Youngsters, Salem-Center, Westchester County, New York; Muir Island, Schottland; X-Factor-Zentrale, Embassy Row, Washington, DC; X-Factor-Hauptquartier, New Yo
Serval Industries, Virginia; früher X-Factor Untersuchungen Hauptquartier, Starjammer; Xavier Institute for Higher Learning, Salem-Center, Westchester County, New York; Genosha; X-Factor HQ, Washington DC, Maryland; Mutant Research Center, Muir Insel;