Creator
Chris Claremont, John Byrne
Chris Claremont, Paul Smith
Base
(current) Emma Frost operates from the Massachusetts Academy, Snow Valley, Massachusetts, (former) Hellfire Club mansion in New York City, a home in the Berkshire Mountains in Massachusetts (near the Massachusetts Academy), and places of residence in vari
The Xavier Institute, Salem Center, Westchester County, New York State, (former) The Alley (beneath Manhattans surface), X-Factor Is sentient starship