The Four Horsemen will be Storm, Psylocke, Angel and Magneto. They are played by actors Alexandra Shipp, Olivia Munn, Ben Hardy and Michael Fassbender, respectively.
They join the rest of the X-Men gang of James McAvoy as the now bald Professor X, Jennifer Lawrence as Mystique, Lucas Till as Havok, Tomas Lemarquis as Caliban, Nicholas Holt as Beast, Sophie Turner as Jean Grey, Tye Sheridan as Cyclops, Lana Condor as Jubilee, Kodi Smit-McPhee as Nightcrawler, Evan Peters as Quicksilver, and Rose Bryne as Doctor Moira MacTaggert. Of course, Oscar Isaac will be playing one of the most powerful mutants to ever hit the screen, En Sabah Nur (Apocalypse).