Adam Scott

Mark Scout

Britt Lower

Helly Riggs

Tramell Tillman

Seth Milchick

Zach Cherry

Dylan George

Jen Tullock

Devon Scout-Hale

Michael Chernus

Ricken Hale

Dichen Lachman

Ms. Casey

Sarah Bock

Eustice Huang

John Turturro

Irving Bailiff

Christopher Walken

Burt Goodman

Patricia Arquette

Harmony Cobel

Ben Stiller

Kier Eagan (voice) (uncredited)

Jeff McCarthy

Nature Documentary Voice (voice)

Hudson Flynn

WMC Activist 1

Ruby Stevens

WMC Activist 2

Alexis Cofield

Checkout Girl

Alexandra Ferrara

Weather Channel Voiceover (voice)

Michael Kayne

Steven

Jillian Lindig

Myrtle Eagan

Lou Martini Jr.

Cop Voiceover (voice)

James Augustus Lee

Bartender

Joanne Kelly

Nina Kilmer

Anthoula Katsimatides

Florence

Nikki M. James

Alexa

Cassidy Layton

June Kilmer

Michael Caiazzo

Lead Singer

Sydney Cole Alexander

Natalie Kalen

Margaret Chardiet

Bass

Annie McNamara

Danise

Donald Webber Jr.

Patton

Grace Rex

Rebeck

Ethan Flower

Angelo Arteta

Karen Aldridge

Asal Regabhi

Tye Miller

Guitarist

Jonathan Iglesias

Guy at Venue

Olivia Alboher

Woman in Old Woman Mask

Griffin Stanton-Ameisen

Waiter

Samantha Farrow

Woman in Bride Mask

Michael Cumpsty

Doug Graner

Charles Henry Wood

Drummer

Sarah Gold

Woman in Jester Mask

Tara Rodriguez

Choreographer

Brian Rock

Wyatt

Rachel Addington

Elizabeth

Nora Dale

Gabriela 'Gabby' Arteta

Weston Krukow

Man in Sheep's Head Mask

Michael Siberry

Jame Eagan

Claudia Robinson

Felicia

Arthur Brooks

Cecil

Rajat Suresh

Balf

Blaze James Gorman

Jim George

Mark Kenneth Smaltz

Judd

Amy Stiller

Event Coordinator

Bob Balaban

Mark Wilkins

Yul Vazquez

Peter 'Petey' Kilmer

Alia Shawkat

Gwendolyn Y.

Stefano Carannante

Dario Rossi

Sarah Sherman

Water Tower (voice)

Keanu Reeves

Animated Lumon Administrative Building (voice) (uncredited)

Ólafur Darri Ólafsson

Mr. Drummond

Adrian Martinez

Mr. Saliba

Jules Forsberg-Lary

Waitress

Derek Hedlund

Lumon Security Guard #1

Adam Jepsen

Man in Hallway

Johnny Bermudez

Lumon Security Guard #2

Gwendoline Christie

Lorne

Jared Johnston

Goat Man

Irish Knight Gorman

Merrick George

Mishay Petronelli

Shadow Helly

Matthew LaBanca

Shadow Irving

Quentin Avery Brown

Shadow Dylan

Faith Vaughn

Woe

Robby Benson

Dr. Mauer

John Noble

Fields

Marc Geller

Kier Eagan (voice)

Merritt Wever

Gretchen George

Sandra Bernhard

Cecily

Eric J Carlson

Mark Watcher

Jane Alexander

Celestine 'Sissy' Cobel

James Le Gros

Hampton

Jerry Stahl

Magnus