On screen
Cast
69 credited performers
Dan Stevens
David Haller / Legion
Rachel Keller
Sydney ‘Syd’ Barrett
Aubrey Plaza
Lenny Busker
Jeremie Harris
Ptonomy Wallace
Amber Midthunder
Kerry Loudermilk
Bill Irwin
Cary Loudermilk
Hamish Linklater
Clark Debussy
Jean Smart
Melanie Bird
Navid Negahban
Amahl Farouk / Shadow King
Luke Roessler
David
Katie Aselton
Amy Haller
Mackenzie Gray
The Eye
Lauren Tsai
Jia-Yi / Switch
Quinton Boisclair
Devil with the Yellow Eyes
Lexa Gluck
Vermillion #3
Ellie Araiza
Philly
Devyn Dalton
Angry Boy
Stephanie Corneliussen
Gabrielle
Jemaine Clement
Oliver Bird
Brad Mann
Rudy
Nathan Hurd
The Monk
Scarlett DeMeo
Manson Girl #1
Harry Lloyd
Charles Xavier / Professor X
Scott Lawrence
Dr. Poole
Kirby Morrow
Large Man Karl
David Selby
Brubaker
David Ferry
Dr. Kissinger
Tatyana Forrest
David's Mother
Dario Giordani
David's Father
Christian Convery
David (4 Years Old)
Lillian Lim
The Monk
Eddie Jemison
The Greek
Daniel Kailin
Asian Teenager
Stephanie Van Dyck
Skeletal Fat Lady
Keir O'Donnell
Daniel
Sebastian Billingsley-Rodriguez
David (Toddler)
Jason Mantzoukas
Jerome / Wolf
Sophie Mackenzie Nack
Sweetie
Margaux Brooke
Eloise
Matt Hamilton
Ben
Mike Azevedo
'Renal Failure' Alvarez
Ese Atawo
Day Room Duty Nurse
June B. Wilde
Science Teacher
Maddie Phillips
Jr. Prom Date (Crying)
Stephanie Lavigne
Patient Dancer #7
Camille Mitchell
Dr. Bates
Jillian Dion
Irma Whitecloud
Emily Shuttleworth
Angry Boy
Gabriel Jacob-Cross
Ptonomy (5 yrs)
Paul Belsito
The Man Who Hides
Sharlene Royer
Ptonomy's Mom
Jesse Chongo
Buster Debusey
Paul Jarrett
General Stanley
Jennifer Kitchen
Burt Hart
Ben Dextraze
Aide
Christopher Collins
Wall Street Frat Boy
Nathan Blair
10 Year Old Boy
Molly Hagan
Laura Mercer
Seamus Dever
Don Eichman
Valentina Izumi
David's wife
Lily Rabe
Joan Barrett
Pearl Amanda Dickson
Teen Syd
Violet Hicks
Young Syd
Audrey Lynn
6 Year Old Syd
Carmela Nozza Guizzo
Young Amy (4 yrs)
Lola Raie
Singing Girl #3
Samantha Desman
9-Year-Old Lenny
Curtis Webster
Doctor
Spencer Ward
Jason