• 
  Don Chaffey

  regizor

• 
  Jan Read

  scenarist
• 
  Beverley Cross

  scenarist

• 
  Todd Armstrong

  Jason
• 
  Nancy Kovack

  Medea
• 
  Gary Raymond

  Acastus
• 
  Laurence Naismith

  Argos
• 
  Niall MacGinnis

  Zeus

• 
  Michael Gwynn

  Hermes
• 
  Douglas Wilmer

  Pelias
• 
  Jack Gwillim

  King Aeetes
• 
  Honor Blackman

  Hera
• 
  Doug Robinson

  Eupaemus
• 
  Patrick Troughton

  Phineas
• 
  Andrew Faulds

  Phalerus

• 
  John Cairney

  Hylas
• 
  Ennio Antonelli

  Drummer on Argo
• 
  John Crawford

  Polydeuces
• 
  Nigel Green

  Hercules
• 
  Nigel Green

  Hercules