Bob Mcleod, Chris Claremont
Chris Claremont, Herb Trimpe
(Saat ini) Investigasi X-Factor, New York City (mantan) Profesor Xaviers School of Gifted Youngsters, Salem Pusat, Westchester County, New York; Muir Island, Skotlandia; markas X-Factor, Embassy Row, Washington, DC; X-Factor Markas, New Yo
Xavier Institute, Salem Pusat, Westchester County, New York sebelumnya Braddock Manor, Inggris Raya; Outback Australia