The X-Men introduced several fictional locations which are regarded as important within the shared universe in which Marvel Comics characters exist: Asteroid M, an asteroid made by Magneto, a mutant utopia and training facility off of the Earth's surface.
X-Men memperkenalkan beberapa lokasi fiktif yang dianggap penting di dalam alam semesta bersama dimana karakter Komik Marvel ada: Asteroid M, sebuah asteroid buatan Magneto, sebuah utopia mutan dan fasilitas latihan di luar permukaan bumi.