Peter Cullen

as Optimus Prime (voice)

Frank Welker

as Megatron / Terrorcon (voice)

Steve Blum

as Starscream / Darksteel (voice)

Jeffrey Combs

as Ratchet (voice)

Will Friedle

as Bumblebee (voice)

James Horan

as Wheeljack (voice)

Michael Ironside

as Ultra Magnus (voice)

Peter Mensah

as Predaking (voice)

Sumalee Montano

as Arcee (voice)

Vinton Heuck

Director

Todd Waterman

Director