Frank Welker

Fred / Scooby-Doo (voice)

Mindy Cohn

Velma (voice)

Matthew Lillard

Shaggy (voice)

Grey DeLisle

Daphne (voice)

Gene Simmons

Demon (voice)

Paul Stanley

Starchild (voice)

Eric Singer

Catman (voice)

Garry Marshall

Manny Goldman (voice)

Doc McGhee

Chip McGhoo (voice)

Pauley Perrette

Delilah Domino (voice)

Rachel Ramras

Shandi Strutter (voice)

Penny Marshall

The Elder (voice)