Creator
David Michelinie, John Byrne
Bob Mcleod, Chris Claremont
Base
Avengers Compound, Los Angeles; formerly Infinite Avengers Mansion; Captive aboard a Skrull ship; Avengers Mansion, New York City, 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