Alan Tudyk

Ian McLellan Hunter

Helen Mirren

Hedda Hopper

Elle Fanning

Niki Trumbo

John Goodman

Frank King

Stephen Root

Hymie King

Diane Lane

Cleo Trumbo

Roger Bart

Buddy Ross

Richard Portnow

Louis B. Mayer

Bryan Cranston

Dalton Trumbo

Adewale Akinnuoye-Agbaje

Virgil Brooks

Louis C.K.

Arlen Hird

Michael Stuhlbarg

Edward G. Robinson

Dean O'Gorman

Kirk Douglas

John Getz

Sam Wood

Jay Roach

Director

Peter MacKenzie

Robert Kenny

Christian Berkel

Otto Preminger

Madison Wolfe

Niki Trumbo (age 8-11)

Laura Flannery

Party Goer

Dan Bakkedahl

Roy Brewer

David James Elliott

John Wayne

Dave Maldonado

Rocco

Toby Nichols

Chris Trumbo (age 6-10)

Joseph Martino

Rally Participant

Jason Bayle

Young Father

Kelly Mullen

Executive Producer

John McNamara

Writer