Creator
Chris Claremont, Marc Silvestri
Bob Mcleod, Chris Claremont
Base
Xavier Institute, Salem Center, Westchester County, New York
(current) X-Factor Investigations, New York City (former)Professor Xaviers School of Gifted Youngsters, Salem Center, Westchester County, New York; Muir Island, Scotland; X-Factor headquarters, Embassy Row, Washington, D.C.; X-Factor Headquarters, New Yo