The secret history of Earth and Cybertron is revealed with the awakening of monster-hunting Autobot Smokescreen. Meanwhile the Autobots are drawn into a cavern filled with ancient Decepticons...
Garry Chalk
Optimus Prime
Sarah Edmondson
Lori
Sam Vincent
Cody
Richard Newman
Vector Prime
Kirby Morrow
Hot Shot
Brian Dobson
Red Alert
Brian Drummond
Jetfire
Michael Dobson
Starscream
David Kaye
Megatron
Mark Oliver
Thundercracker
Lisa Ann Beley
Override
Paul Dobson
Landmine
Tabitha St. Germain
Professor Lucy Suzuki
Richard Ian Cox
Scattershot