The Secret Serum

Cast

• 

  Frank Welker

  Scooby-Doo / Fred Jones (voice)

• 

  Grey DeLisle

  Daphne Blake (voice)

• 

  Mindy Cohn

  Velma Dinkley (voice)

• 

  Matthew Lillard

  Shaggy Rogers (voice)

• 

  Frances Conroy

  Angie Dinkley (voice)

• 

  Kath Soucie

  Nan Blake (voice)

• 

  Patrick Warburton

  Sheriff Bronson Stone (voice)

• 

  Beverly D'Angelo

  Sheila Altoonian (voice)

• 

  Kevin Dunn

  Garden Manager (voice)

• 

  Tom Kenny

  Auctioneer (voice)

• 

  Richard McGonagle

  Ed Machine (voice)