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;
Xavier Institute for Higher Learning, Salem Pusat, Westchester County, New York (mantan) Muir Island, Skotlandia; Braddock Lighthouse