Dennis Neville, Stan Lee, Steve Ditko
Bob Mcleod, Chris Claremont
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(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