Suggestions by @bumbleprime

Matthew Lillard

as Shaggy Rogers in Scooby-Doo! Meets The Transformers (Space Alien Station)

Grey DeLisle

as Daphne Blake in Scooby-Doo! Meets The Transformers (Space Alien Station)

Frank Welker

as Fred Jones in Scooby-Doo! Meets The Transformers (Space Alien Station)

Mae Whitman

as Lisa Dinkley in Scooby-Doo! Meets The Transformers (Chugga-Chugga Boo Boo!)

Amy Adams

as Sarah Hawkins in Characters For Actors & Actresses To Play In Live Action

Keith David

as Shockwave in Scooby-Doo! Meets The Transformers (Phantom Of The Theater)

Tara Strong

as Slipstream in Scooby-Doo! Meets The Transformers (The Need For Speed)

Jim Cummings

as Thundercracker in Scooby-Doo! Meets The Transformers (The Need For Speed)

Tom Kenny

as Skywarp in Scooby-Doo! Meets The Transformers (The Need For Speed)

Dee Bradley Baker

as Astrotrain in Scooby-Doo! Meets The Transformers (The Need For Speed)

Dan Castellaneta

as Octane in Scooby-Doo! Meets The Transformers (The Need For Speed)

Keith David

as Shockwave in Scooby-Doo! Meets The Transformers (The Need For Speed)

Jess Harnell

as Barricade in Scooby-Doo! Meets The Transformers (The Need For Speed)

Frank Welker

as Soundwave in Scooby-Doo! Meets The Transformers (The Need For Speed)

Steve Blum

as Starscream in Scooby-Doo! Meets The Transformers (The Need For Speed)

Frank Welker

as Megatron in Scooby-Doo! Meets The Transformers (The Need For Speed)

Mark Hamill

as Wheeljack in Scooby-Doo! Meets The Transformers (The Need For Speed)

Jeff Bennett

as Prowl in Scooby-Doo! Meets The Transformers (The Need For Speed)

Kevin Michael Richardson

as Bulkhead in Scooby-Doo! Meets The Transformers (The Need For Speed)

Khary Payton

as Jazz in Scooby-Doo! Meets The Transformers (The Need For Speed)