Full cast of Legion

Dan Stevens

David Haller / Legion

27 episodes

Rachel Keller

Sydney ‘Syd’ Barrett

27 episodes

Aubrey Plaza

Lenny Busker

27 episodes

Jeremie Harris

Ptonomy Wallace

27 episodes

Amber Midthunder

Kerry Loudermilk

27 episodes

Bill Irwin

Cary Loudermilk

27 episodes

Hamish Linklater

Clark Debussy

22 episodes

Jean Smart

Melanie Bird

20 episodes

Navid Negahban

Amahl Farouk / Shadow King

19 episodes

Luke Roessler

David Haller (6-8 Years) / David

16 episodes

Katie Aselton

Amy Haller

9 episodes

Mackenzie Gray

The Eye

8 episodes

Lauren Tsai

Jia-Yi / Switch

8 episodes

Quinton Boisclair

Devil with the Yellow Eyes

8 episodes

Lexa Gluck

Vermillion #3

8 episodes

Ellie Araiza

Philly

5 episodes

Devyn Dalton

Angry Boy

5 episodes

Stephanie Corneliussen

Gabrielle

4 episodes

Jemaine Clement

Oliver Bird

4 episodes

Brad Mann

Rudy

4 episodes

Nathan Hurd

The Monk

4 episodes

Scarlett DeMeo

Cynthia / Manson Girl #1

4 episodes

Harry Lloyd

Charles Xavier / Professor X

3 episodes

Scott Lawrence

Dr. Poole

3 episodes

Kirby Morrow

Benny / Large Man Karl

3 episodes

David Selby

Brubaker

3 episodes

David Ferry

Dr. Kissinger

3 episodes

Tatyana Forrest

David's Mother

3 episodes

Dario Giordani

David's Father

3 episodes

Christian Convery

David (4 Years Old)

3 episodes

Lillian Lim

The Monk

2 episodes

Eddie Jemison

The Greek

2 episodes

Daniel Kailin

Asian Teenager

2 episodes

Stephanie Van Dyck

Skeletal Fat Lady

2 episodes

Keir O'Donnell

Daniel

2 episodes

Sebastian Billingsley-Rodriguez

David (Toddler)

2 episodes

Jason Mantzoukas

Jerome / Wolf

1 episode

Sophie Mackenzie Nack

Sweetie

1 episode

Margaux Brooke

Eloise

1 episode

Matt Hamilton

Ben

1 episode

Mike Azevedo

'Renal Failure' Alvarez

1 episode

Ese Atawo

Day Room Duty Nurse

1 episode

June B. Wilde

Science Teacher

1 episode

Maddie Phillips

Jr. Prom Date (Crying)

1 episode

Stephanie Lavigne

Patient Dancer #7

1 episode

Camille Mitchell

Dr. Bates

1 episode

Jillian Dion

Irma Whitecloud

1 episode

Emily Shuttleworth

Angry Boy

1 episode

Gabriel Jacob-Cross

Ptonomy (5 yrs)

1 episode

Paul Belsito

The Man Who Hides

1 episode

Sharlene Royer

Ptonomy's Mom

1 episode

Jesse Chongo

Buster Debusey

1 episode

Paul Jarrett

General Stanley

1 episode

Jennifer Kitchen

Burt Hart

1 episode

Ben Dextraze

Aide

1 episode

Christopher Collins

Wall Street Frat Boy

1 episode

Nathan Blair

10 Year Old Boy

1 episode

Molly Hagan

Laura Mercer

1 episode

Seamus Dever

Don Eichman

1 episode

Valentina Izumi

David's wife

1 episode

Lily Rabe

Joan Barrett

1 episode

Pearl Amanda Dickson

Teen Syd

1 episode

Violet Hicks

Young Syd

1 episode

Audrey Lynn

6 Year Old Syd

1 episode

Carmela Nozza Guizzo

Young Amy (4 yrs)

1 episode

Lola Raie

Singing Girl #3

1 episode

Samantha Desman

9-Year-Old Lenny

1 episode

Curtis Webster

Doctor

1 episode

Spencer Ward

Jason

1 episode