Megatron

Frank Welker

Optimus Prime

Sung Wan-gyeong

Optimus Prime

Peter Cullen

Arcee

Lee Sun

Arcee

Sumalee Montano

Starscream (voice)

Steve Blum

Ratchet

Jeffrey Combs

Bulkhead

Jeong Yeong-wung

Bulkhead (voice)

Kevin Michael Richardson

Ratchet

Ha Sung-yong

Miko Nakadai (voice)

Tania Gunadi

Silas (voice)

Clancy Brown

Wheeljack

James Horan

Wheeljack/ Megatron/ Shockwave

Goo Ja-Hyeong

Bumblebee

Will Friedle

Smokescreen

Jeon Tae-yeol

Airachnid (voice)

Gina Torres

Ultra Magnus (voice)

Michael Ironside

Jack Darby (voice)

Josh Keaton

Shockwave/Vehicon Trooper No. 1

David Sobolov

Agent William Fowler

Ernie Hudson

Jackson Darby

Um Sang-hyun

Miko Nakadai

Lee So-yeong

Knock Out/ Rafael Esquivel

Nam Do-hyung

Predaking

Peter Mensah

Rafael "Raf" Esquivel

Andy Pessoa

Knock Out

Daran Norris

Starscream

Hong Jin-wook

Smokescreen

Nolan North

June Darby

Markie Post

Alpha Trion

George Takei

Breakdown (voice)

Adam Baldwin

Dreadwing (voice)

Tony Todd

Unicron (voice)

John Noble