Full Cast — Legion (2017–2019)

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 Haller (6-8 Years) / 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 / Cynthia

Harry Lloyd

Charles Xavier / Professor X

Scott Lawrence

Dr. Poole

Kirby Morrow

Benny / 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)