Characters
James McAvoy as Professor Charles Xavier: The telepathic leader and founder of the X-Men and one of Magneto's best friends until conflicts of opinion create a rivalry between them and their teams.
Michael Fassbender as Erik Lensherr / Magneto: A mutant capable of manipulating and generating electromagnetic fields, he becomes one of Xavier's best friends until conflicts of opinion create a rivalry between them, with Lensherr afterwards founding the Brotherhood of Mutants
Rose Byrne as Moira MacTaggert: A CIA agent and Charles Xavier's love interest.
Jennifer Lawrence as Raven Darkholme / Mystique: A shape-shifting mutant and Charles Xavier's childhood friend.
January Jones as Emma Frost / White Queen: A telepath who can also change her body into diamond form and was a member of the Hellfire Club. However,, she has joined Magneto on his Brotherhood of Mutants.
Nicholas Hoult as Dr. Henry "Hank" McCoy / Beast: A former scientist and political activist who transformed into a frightening looking mutant in an attempt to cure himself, but is kind at heart.
Justin Hartley as David Haller/Legion: A telepathic, telekinetic, and pyrokinetic mutant was born in the same camps as Magneto.
Zoë Kravitz as Angel Salvadore: A mutant with dragonfly wings and acidic saliva. She had joined on the side of the hellfire club, but after Sebastion Shaw's death, she joined Magneto's Brotherhood of Mutants.
Caleb Landry Jones as Sean Cassidy / Banshee: A mutant capable of ultrasonic screaming, used in various ways including as a means of flight.
Lucas Till as Alex Summers / Havok: A mutant who has the ability to absorb energy and discharge it as blasts.
Edi Gathegi as Armando Muñoz / Darwin: A mutant with the power of "reactive evolution.
Jason Flemyng as Azazel: A Hellfire Club member who teleports.
Álex González as Janos Quested / Riptide: A mutant with the ability to create powerful whirlwinds from his hands and body.
Ray Wise as the United States Secretary of State.
Matt Craven as CIA Director McCone
Don Creech as William Stryker