"The Ages of Apocalypse" is a series of sub-chapters to Marvel Comics' "The Twelve" saga, wherein En Sabah Nur finds himself trapped in the body of Scott Summers (Cyclops of X-Men) after a failed attempt to possess Nate Grey. Using his newfound powers, Apocalypse warps reality several times, trying to get the Twelve to feed him more and more power. "The Ages of Apocalypse" arc is mainly an exploration of the trapped heroes finding a way out of those alternative reality warps.