The immortal Apocalypse will make its appearance in the coming "X-Men" sequel, "X-Men: Apocalypse." With the aid of the Four Horsemen and the Clan Akkaba, he is going to be one super-villain who's going to cause big trouble for Marvel's mutant superheroes.
Thus, he is called En Sabah Nur or "The First One." Born in the city of Akkaba, he was abandoned and left to die in the desert because of his strange grey skin.
Apocalypse does not only have the Four Horsemen but also the Clan Akkaba on his side.
Clan Akkaba is a cult that formed around Apocalypse back in Egypt.