Transformers/Scooby Doo Crossover

Autobots
Peter Cullen As Optimus Prime and Ironhide
Dan Gilvezan As Bumblebee
Billy West As Ratchet
Susan Blu As Arcee
Jack Angel As Ultra Magnus
Maurice LaMarche As Cliffjumper
Decepticons 
Frank Welker As Megatron
Tom Kenny As Starscream
Corey Burton As Shockwave
Gina Torres As Arachnid
Mystery Inc. 
Frank Welker As Scooby-Doo/Fred Jones
Matthew Lillard As Shaggy Rogers
Grey Delisle As Daphne Blake
Kate Micucci As Velma Dinkley