Frank Welker character Scooby-Doo / Rudy / Fred / Nefario (voice)
Grey DeLisle character Daphne / Daisy / Musketeer 1 / Olive (voice)
Matthew Lillard character Shaggy / Craggly / Captain Cutler (voice)
Kate Micucci character Velma / Helga (voice)
Myrna Velasco character Coco Diablo (voice)
Dee Bradley Baker character Esteban / Mr. Wickles / Cat Man (voice)
Jeff Bennett character Shady Guy / Charlie Humdrum / Hank (voice)
Anthony Carrigan character Trevor Glume / Farmer (voice)
Erin Fitzgerald character Library Kid / Superhero Girl / Musketeer 2 (voice)
David Lodge character Warden Collins / Harry the Hypnotist / Inspector (voice)
Lara Jill Miller character Prisoner Costume Teen / Superhero Boy / Musketeer 3 (voice)
Candi Milo character Prison Woman / Dinosaur Kid / Monster Kid (voice)
Jenelle Lynn Randall character Librarian / Superboy (voice)
Kevin Michael Richardson character Sheriff / Henry Bascombe / 10,000 Volt Ghost (voice)
