X-Factor Untersuchungen Hauptquartier, New York City, New York; früher Detroit, Michigan; Mobile; Xaviers Schule für Gifted Youngsters, Salem-Center, Westchester County, New York; Mojoverse; Cootermans Creek, Australian Outback, Australia; Alcatraz I
Früher Utopia, San Francisco Bay, Kalifornien; Genosha; Xavier Institute, Salem-Center, Westchester County, New York; Imperial Palace, Chandilar, Shiar Reich; Columbia University, Manhattan, New York City, New York