Frank Welker

Megatron / Mirage / Soundwave / various characters (voice)

Gregg Berger

Cliffjumper / Narrator / Spike Witwicky / various characters (voice)

Peter Cullen

Optimus Prime / Ironhide (voice)

Frank Todaro

Starscream / Wheeljack / Reflector / Sparkplug Witwicky (voice)

Arif S. Kinchen

Jazz (voice)

Dan Gilvezan

Bumblebee / Shockwave (voice)

Michael Bell

Prowl (voice)

Victor Caroli

Narrator (archive audio)

Paul Eiding

Hound / Ratchet / Teletraan 1 / Thundercracker (voice)

Corey Burton

Spike Witwicky / Shockwave / Brawn (archive audio)

Don Messick

Gears / Ratchet (archive audio)

John Stephenson

Huffer / Thundercracker (archive audio)

Scatman Crothers

Jazz (archive audio)

Christopher Collins

Starscream / Wheeljack / Laserbeak (archive audio)