Dan StevensDavid Haller / Legion Rachel KellerSydney ‘Syd’ Barrett Jeremie HarrisPtonomy Wallace Amber MidthunderKerry Loudermilk Bill IrwinCary Loudermilk Hamish LinklaterClark Debussy Navid NegahbanAmahl Farouk / Shadow King Luke RoesslerDavid Haller (6-8 Years) Lauren TsaiJia-Yi / Switch Quinton BoisclairDevil with the Yellow Eyes Stephanie CorneliussenGabrielle Jemaine ClementOliver Bird Scarlett DeMeoManson Girl #1 Harry LloydCharles Xavier / Professor X Tatyana ForrestDavid's Mother Dario GiordaniDavid's Father Christian ConveryDavid (4 Years Old) Daniel KailinAsian Teenager Stephanie Van DyckSkeletal Fat Lady Sebastian Billingsley-RodriguezDavid (Toddler) Jason MantzoukasJerome / Wolf Sophie Mackenzie NackSweetie Mike Azevedo'Renal Failure' Alvarez Ese AtawoDay Room Duty Nurse June B. WildeScience Teacher Maddie PhillipsJr. Prom Date (Crying) Stephanie LavignePatient Dancer #7 Camille MitchellDr. Bates Jillian DionIrma Whitecloud Emily ShuttleworthAngry Boy Gabriel Jacob-CrossPtonomy (5 yrs) Paul BelsitoThe Man Who Hides Sharlene RoyerPtonomy's Mom Jesse ChongoBuster Debusey Paul JarrettGeneral Stanley Jennifer KitchenBurt Hart Christopher CollinsWall Street Frat Boy Nathan Blair10 Year Old Boy Valentina IzumiDavid's wife Pearl Amanda DicksonTeen Syd Audrey Lynn6 Year Old Syd Carmela Nozza GuizzoYoung Amy (4 yrs) Samantha Desman9-Year-Old Lenny Noah HawleyRežisér / Scénárista / Výkonný producent Carlos López EstradaRežisér Nathaniel HalpernScénárista Jennifer YaleScénárista / Koproducent Stan LeeVýkonný producent Simon KinbergVýkonný producent Jim ChoryVýkonný producent Jeph LoebVýkonný producent Alan FineVýkonný producent Lauren Shuler DonnerVýkonný producent Bryan SingerVýkonný producent Brian C. BrownKoproducent Steve BlackmanVýkonný producent Melanie CyczSet Decoration Buyer Amy VincentSecond Unit Director Of Photography Cory FaulknerFirst Assistant Director Lou PecoraVisual Effects Supervisor Jason Lei HowdenDigital Compositor 
