• 
  Howard Swift

  regizor

• 
  Tom Dagenais

  scenarist

• 
  Don Messick

  Scoobert 'Scooby' Doo
• 
  Casey Kasem

  Norville 'Shaggy' Rogers
• 
  Frank Welker

  Fred 'Freddy' Jones
• 
  Stefanianna Christopherson

  Daphne Blake
• 
  Nicole Jaffe

  Velma Dinkley
• 
  June Foray

  Gypsy Fortune Teller (1 episode, 1969)

• 
  Jean Vander Pyl

  Additional Voices  (6 episodes, 1969)
• 
  Hal Smith

  Additional Voices  (6 episodes, 1969)
• 
  Heather North

  Daphne (8 episodes, 1970)
• 
  John Stephenson

  Additional Voices  (7 episodes, 1969-1970)
• 
  Nicole Jaffe

  Velma
• 
  Vic Perrin

   Additional Voices / ... (25 episodes, 1969-1970)
• 
  Barry Richards

   Geronimo / ... (10 episodes, 1969-1970)

• 
  George A. Robertson

   Bluestone / ... (11 episodes, 1969-1970)
• 
  Susan Stewart

   Helga (8 episodes, 1970)
• 
  Michael Stull

   Wax Phantom (8 episodes, 1970)
• 
  Emanuela Fallini

  14 episodes, 1969
• 
  Rosalinda Galli

  15 episodes, 1969-1970