Editing Professor X (section)

===Age of Apocalypse===
In the ''[[Age of Apocalypse]]'', Charles Xavier was killed when he sacrificed himself to save Erik Lensherr from his own future son, [[Legion (Marvel Comics)|David Haller (Legion)]], who had gone back in time to eliminate Magneto in the belief that his father would thus be there for him and succeed in his dream without Magneto to 'hinder' his efforts. As a result, Magneto founded the X-Men and sought human/mutant co-existence in Xavier's name- even naming his new son with Rogue 'Charles' after his friend- but Haller's rampage also prompted [[Apocalypse (Marvel Comics)|Apocalypse]] to awaken decades before the world was ready for him, resulting in Apocalypse conquering North America and most of the world, eventually forcing Magneto's X-Men to attempt a daring mission to gain the power necessary to go back in time and save Xavier from Haller as they recognised how vital Xavier was to the future.