Peter Cullen

Optimus Prime (voice)

Jeffrey Combs

Ratchet (voice)

Frank Welker

Megatron (voice)

Tania Gunadi

Miko Nakadai (voice)

Josh Keaton

Jack Darby (voice)

Kevin Michael Richardson

Bulkhead (voice)

Ernie Hudson

Agent William Fowler (voice)

Andy Pessoa

Rafael "Raf" Esquivel (voice)

Sumalee Montano

Arcee (voice)

Nolan North

Smokescreen (voice)

Steve Blum

Starscream (voice)

Michael Ironside

Ultra Magnus (voice)

David Sobolov

Shockwave (voice)

Daran Norris

Knock Out (voice)

James Horan

Wheeljack (voice)

Richard Green

Skyquake (voice)

Dwayne Johnson

Cliffjumper (voice)

Alexandra Krosney

Sierra (voice)

Clancy Brown

Silas (voice)

Will Friedle

Bumblebee (voice)

George Takei

Alpha Trion (voice)

David Kaye

Hardshell (voice)

John Noble

Unicron (voice)

Peter Mensah

Predaking (voice)

Tony Todd

Dreadwing (voice)

Billy Brown

Cliffjumper (voice)

Adam Baldwin

Breakdown (voice)

Reggie Bannister

Museum Security Guard (voice)

Brad Raider

Vince (voice)

Gina Torres

Airachnid (voice)

John DiMaggio

Vogel (voice)

Robert Forster

General Bryce (voice)

Markie Post

June Darby (voice)