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)

Steve Blum Starscream (voice)

Daran Norris Knock Out (voice)

Markie Post June Darby (voice)

David Sobolov Shockwave (voice)

Nolan North Smokescreen (voice)

Michael Ironside Ultra Magnus (voice)

Adam Baldwin Breakdown (voice)

Clancy Brown Silas (voice)

Tony Todd Dreadwing (voice)

Gina Torres Airachnid (voice)

John Noble Unicron (voice)

Peter Mensah Predaking (voice)

Alexandra Krosney Sierra (voice)

George Takei Alpha Trion (voice)

David Kaye Hardshell (voice)

James Horan Wheeljack (voice)

Richard Green Skyquake (voice)

Dwayne Johnson Cliffjumper (voice)

Will Friedle Bumblebee (voice)

Billy Brown Cliffjumper (voice)

Reggie Bannister Museum Security Guard (voice)

Brad Raider Vince (voice)

John DiMaggio Vogel (voice)

Robert Forster General Bryce (voice)

Roberto Orci

Alex Kurtzman

Duane Capizzi

Jeff Kline

Shaunt Nigoghossian

Vinton Heuck

Todd Waterman

Scooter Tidwell

David Hartman

Kevin Altieri

Marsha Griffin

Steven Melching

Joseph Kuhr

Nicole Dubuc

Duane Capizzi

Marty Isenberg

Mairghread Scott

Michael Cassutt

Dean Stefan

Tim Jones

David Slack

Michael G. Stern

Greg Weisman

Mike Johnson

Andrew Robinson