Suggestions by @bumbleprime

Peter Cullen

as Optimus Prime in Scooby-Doo meets the Transformers

Tara Strong

as Slipstream in Transformers: Journeys (Down On The Farm)

Jim Cummings

as Thundercracker in Transformers: Journeys (Down On The Farm)

Richard Epcar

as Skywarp in Transformers: Journeys (Down On The Farm)

Dee Bradley Baker

as Astrotrain in Transformers: Journeys (Down On The Farm)

Charlie Adler

as Sunstorm in Transformers: Journeys (Down On The Farm)

Dan Castellaneta

as Octane in Transformers: Journeys (Down On The Farm)

Daran Norris

as Knockout in Transformers: Journeys (Down On The Farm)

Keith David

as Shockwave in Transformers: Journeys (Down On The Farm)

Jess Harnell

as Barricade in Transformers: Journeys (Down On The Farm)

Frank Welker

as Soundwave in Transformers: Journeys (Down On The Farm)

Steve Blum

as Starscream in Transformers: Journeys (Down On The Farm)

Frank Welker

as Megatron in Transformers: Journeys (Down On The Farm)

Steve Blum

as Wheeljack in Transformers: Journeys (Down On The Farm)

Fred Tatasciore

as Brawn in Transformers: Journeys (Down On The Farm)

Jeff Bennett

as Prowl in Transformers: Journeys (Down On The Farm)

Clancy Brown

as Ultra Magnus in Transformers: Journeys (Down On The Farm)

Kevin Michael Richardson

as Bulkhead in Transformers: Journeys (Down On The Farm)

Wayne Brady

as Jazz in Transformers: Journeys (Down On The Farm)

Christy Carlson Romano

as Elita-1 in Transformers: Journeys (Down On The Farm)