Creator
Bob Mcleod, Chris Claremont
  
John buscema, Roy thomas
  
Base
(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
  
Asgard, later New York City area, later Defenders Mansion, Colorado.