Megatron / Mirage / Rumble / Skywarp / Soundwave (voice)

Cliffjumper / Narrator / Spike Witwicky (voice)

Optimus Prime / Ironhide (voice)

Starscream / Wheeljack / Reflector / Sparkplug Witwicky (voice)

Jazz (voice)

Bumblebee / Shockwave (voice)

Prowl (voice)

Narrator (voice) (archive footage)

Hound / Ratchet / Teletraan 1 / Thundercracker (voice) (archive footage)

Spike Witwicky / Shockwave / Brawn (voice) (archive footage)

Gears / Ratchet (voice) (archive footage)

Huffer / Thundercracker (voice) (archive footage)

Jazz (voice) (archive footage)

Starscream / Wheeljack / Laserbeak (voice) (archive footage)