Baseren
De Xavier Institute, Salem Center, Westchester County, New York State, (voormalige) The Alley (onder Manhattans oppervlak), X-Factor Is voelende starship
Serval Industries, Virginia; voorheen X-Factor Onderzoeken Headquarters, Starjammer; Xavier Institute for Higher Learning, Salem Center, Westchester County, New York; Genosha; X-Factor HQ, Washington DC, Maryland; Mutant Research Center, Muir Island;