Mendasarkan
(Saat ini) Profesor Charles Xaviers Institute for Higher Learning, Salem Pusat, Westchester County, New York (mantan) Muir Isle, Skotlandia ,; loteng di Soho, Manhattan, Ust-Ordynski Kolektif, Danau Baikal, Siberia, Uni Soviet, X-Men Markas di Austra
Serval Industries, Virginia; sebelumnya X-Factor Investigasi Markas, Starjammer; Xavier Institute for Higher Learning, Salem Pusat, Westchester County, New York; Genosha; X-Factor HQ, Washington DC, Maryland; Mutan Research Center, Muir Pulau;