Maisie Williams (Rahne Sinclair / Wolfsbane), Anya Taylor-Joy (Illyana Rasputin / Magik), Charlie Heaton (Samuel Guthrie / Cannonball), Alice Braga (Dr. Cecilia Reyes), Blu Hunt (Danielle Moonstar / Mirage), Henry Zaga (Roberto da Costa / Sunspot), Adam Beach (Dani's Father) more..., Thomas Kee (Thomas Guthrie), Colbi Gannett (Young Illyana), Happy Anderson (Reverend Craig), Dustin Ceithamer (Smiling Man), Mickey Gilmore (Coal Miner), Jeffrey Corazzini (Coal Miner), Jacinto Vega SpiritWolf (Frozen Cheyenne), Chuck (Wolf), Marilyn Manson (Voice of Smiling Man (voice))

Ronna Kress (Casting), Karen Rosenfelt (Producer), Lauren Shuler Donner (Producer), Stan Lee (Executive Producer), Peter Deming (Director of Photography), Molly Hughes (Production Design), Simon Kinberg (Producer) more..., Mark Snow (Original Music Composer), Brenda McNally (Hair Department Head), Robb Sullivan (Editor), Leesa Evans (Costume Design), Trish Seeney (Makeup Department Head), Len Wein (Characters), Nate Walcott (Additional Music), Hutch Parker (Producer), Chris Claremont (Comic Book), Mike Mogis (Additional Music), Josh Boone (Screenplay), Merissa Lombardo (Set Decoration), Matthew Rundell (Editor), Virginia B. Johnson (Costume Design), Dan O'Connell (Foley Artist), Ravi Bansal (Art Direction), Knate Gwaltney (Screenplay), Casey McDougal (Stand In), Katrina Schiller (Music Editor), Howard Samuelsohn (Dialect Coach), Camille Friend (Hairstylist), Thomas Carroll (Pyrotechnician), John Ruggieri (Pyrotechnic Supervisor), Mark Hawker (Special Effects Supervisor), Andrew Buckland (Editor), Steve Cantamessa (Sound Mixer), Scott La Rue (Boom Operator), Christopher Walsh (Special Effects Technician), Acei Martin (Stand In), Anthony Raymond (Set Designer), Frédéric North (Aerial Coordinator), Julie LeShane (Makeup Artist), Bob McLeod (Comic Book) and others.