If X-Men 4 features Apocalypse, which characters introduced so far in the X-Men series would make the best candidates for his Four Horsemen of Death? In the comics, pretty much every character has at one point been one of the Four Horsemen, there's really no set four. Including incarnations from X-Men: Evolution, and other alternate universes from the comics, it's very open-ended. I think the best four candidates would be Xavier, Magneto, Storm, and Angel. This way, Xavier can get his old body back thanks to Apocalypse, Magneto can become more powerful than before he lost his powers, and Angel can get his metal wings. And Wolverine will have to lead the rest of the X-Men and even the Brotherhood to save the world. Everyone would get a good amount of screen time and it seems fitting that three of the most powerful mutants would be used by Apocalypse, maybe Angel joins him willingly after he loses his wings and would do anything to fly again.