The astral form of Professor Xavier has since been revealed to be imprisoned in the Astral Plane after Shadow King somehow acquired it upon Professor X's death. After what appeared to be years in the Astral Plane, Professor X is able to trick Shadow King into playing him in a 'game' that lures Rogue, Mystique and Fantomex onto the Astral Plane, while turning others into carriers for the Shadow King's 'contagious' psychic essence. With the Shadow King certain of his victory, he fails to realize that Xavier's apparent 'surrender' to his game was really just him biding his time until the Shadow King's influence was distracted long enough for him to drop his already-subtly-weakened guard long enough for Xavier to break his bonds, luring in the three aforementioned X-Men as their identities were already fundamentally malleable. With the Shadow King defeated, Xavier is apparently returned to the real world in the body of Fantomex, Fantomex reasoning that nobody really knows who he is as an individual beyond his status as one of the X-Men whereas this act of sacrifice will ensure that he is remembered for a great deed.