Al Milgrom, Chris Claremont, Michael Golden, Stan Lee, Steve Ditko
Arnold Drake, Don heck
Adventurer, former mechanic, waitress, terrorist
Adventurer, former U.S.
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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;