Blu Hunt (Dani Moonstar), Maisie Williams (Rahne Sinclair), Anya Taylor-Joy (Illyana Rasputin), Charlie Heaton (Samuel Guthrie), Henry Zaga (Roberto da Costa), Alice Braga (Dr. Reyes), Adam Beach (Dani's Father) more..., Thomas Kee (Sam's Father), Colbi Gannett (Young Illyana), Happy Anderson (Reverend Craig), Dustin Ceithamer (Smiling Man), Mickey Gilmore (Coal Miner (uncredited)), Jeffrey Corazzini (Coal Miner (uncredited)), Jacinto Vega SpiritWolf (Frozen Cheyenne), Marilyn Manson (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), Nate Walcott (Additional Music), Hutch Parker (Producer), Mike Mogis (Additional Music), Merissa Lombardo (Set Decoration), Matthew Rundell (Editor), Virginia B. Johnson (Costume Design), Dan O'Connell (Foley Artist), Ravi Bansal (Art Direction), 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), Vince Mountain (Set Designer), Leslie Coogan (Special Effects Technician), Ralph Ayala (Stand In), Pete Kelley (Special Effects Technician), Loic Zimmermann (Art Direction) and others.