Base
Law offices of Goodman, Lieber, Kurtzberg, & Holliway; formerly Avengers Mansion; Baxter Building, Four Freedoms Plaza
Serval Industries, Virginia; formerly X-Factor Investigations Headquarters, Starjammer; Xavier Institute for Higher Learning, Salem Center, Westchester County, New York; Genosha; X-Factor HQ, Washington D.C., Maryland; Mutant Research Center, Muir Island;