• 
  Robert William Ford

   Bob (6 episodes)
• 
  Joshua Courtade

   Captain Christopher Hemingway (6 episodes)
• 
  Scott Merriman

   Milton Gresziak / ... (6 episodes)
• 
  Kristin Mellian

   Dr. Danielle Austen (8 episodes, 2017)
• 
  Kara Joy Reed

  Ashley Andromeda
• 
  Amanda Kaley

  Jennifer
• 
  Jeff Priskorn

  Captain Thaddeus Newton
• 
  Jacquie Floyd

  Cindy Lovecraft

• 
  Jennifer L. Jelsema

  Rachel Melville
• 
  Mariea Luisa Macavei

  The Space Sirens
• 
  Dana Blackstone

  Cecilia Dickens
• 
  Shelby Bradley

  The President of the Earth
• 
  Carrie Overgaard

  Vicki
• 
  Richard Raphael

  Olaf Burroughs
• 
  Jessica Rogers

  Penny Steinbeck

• 
  David Brown

  Olaf's Servant
• 
  Max Chamberlin

  Space Orphan
• 
  Anne K. Miranda

  High Priestess Green