Josh Brolin

Eddie Mannix

George Clooney

Baird Whitlock

Alden Ehrenreich

Hobie Doyle

Ralph Fiennes

Laurence Laurentz

Scarlett Johansson

DeeAnna Moran

Tilda Swinton

Thora Thacker / Thessaly Thacker

Channing Tatum

Burt Gurney

Frances McDormand

C. C. Calhoun

Jonah Hill

Joe Silverman

Veronica Osorio

Carlotta Valdez

Heather Goldenhersh

Natalie (Secretary)

Alison Pill

Mrs. Mannix

Max Baker

Head Communist Writer

Fisher Stevens

Communist Writer

Patrick Fischler

Communist Writer

Tom Musgrave

Communist Writer

David Krumholtz

Communist Writer

Greg Baldwin

Communist Writer

Patrick Carroll

Communist Writer

Fred Melamed

Communist Writer

John Bluthal

Prof. Marcuse

Alex Karpovsky

Mr. Smitrovich

Armazd Stepanian

Eastern Orthodox Clergyman

Allan Havey

Protestant Clergyman

Robert Pike Daniel

Catholic Clergyman

Robert Picardo

Rabbi

Ian Blackman

Cuddahy

Geoffrey Cantor

Sid Siegelstein

Christopher Lambert

Arne Seslum

Robert Trebor

Producer of "Hail, Caesar!"

Michael Yama

Chinese Restaurant Maître D'

Ming Zhao

Chinese Restaurant Waitress

Helen Siff

Malibu Maid

Basil Hoffman

Stu Schwartz (Accounting)

Luke Spencer Roberts

Peanut

Ralph P. Martin

Director of Action Western

James Austin Johnson

Studio Assistant at Action Western

Noah Baron

Water Ballet P.A.

Timm Perry

Stage 8 Man at the Door

Noel Conlon

Scotty at the Gate