• 
  Michael Bell

   Space Ace (11 episodes, 1981)
• 
  Keene Curtis

   Narrator (11 episodes, 1981)
• 
  Richard Erdman

   Additional Voices (11 episodes, 1981)
• 
  Virginia Gregg

   Tara (11 episodes, 1981)
• 
  Darryl Hickman

   Kid Comet (11 episodes, 1981)
• 
  Casey Kasem

   Announcer (11 episodes, 1981)
• 
  Allan Lurie

   Uglor (11 episodes, 1981)
• 
  Sparky Marcus

   Dorno (11 episodes, 1981)

• 
  Chuck McCann

   Additional Voices (11 episodes, 1981)
• 
  Don Messick

  Astro
• 
  Gary Owens

  Space Ghost
• 
  David Raynr

   Moleculad (11 episodes, 1981)
• 
  Mike Road

   Igoo / ... (11 episodes, 1981)
• 
  Stanley Ralph Ross

   Additional Voices (11 episodes, 1981)
• 
  John Stephenson

   Additional Voices (11 episodes, 1981)

• 
  Alexandra Stoddart

  Jan
• 
  B.J. Ward

   Elektra (11 episodes, 1981)
• 
  Lennie Weinrib

   Dipper (11 episodes, 1981)
• 
  Frank Welker

  Blip
• 
  Michael Winslow

   Plutem (11 episodes, 1981)
• 
  Steve Spears

  Jace