Full Cast & Crew

Cast(in credits order) verified as complete  

• 
  Frank Welker
  ...
  Scooby-Doo (voice)
• 
  Scott Menville
  ...
  Shaggy Rogers / Dr. Trebla / Additional Voices (voice)
• 
  Jim Meskimen
  ...
  Robi / Agent #1 (voice)
• 
  Casey Kasem
  ...
  Uncle Albert (voice)
• 
  Jeff Bennett
  ...
  Dr. Phibes / Agent #2 (voice)