• 
  David Bailie

  Jacob
• 
  Nigel Barber

  Alex Grant
• 
  Brian Deacon

  David Johnson
• 
  Nick Kokotakis

  Lee Cooksley
• 
  Jane Perry

  Gillian
• 
  Kosha Engler

  Jessica 2.0 (voice)
• 
  Ezra Khan

  Dr. Kuresh
• 
  Jessica Blake

  Candidate 2

• 
  Amy Lawhorn

  US Mission Controller (voice)
• 
  Noeleen Comiskey

  Jessica Johnson
• 
  Julian Graham

  Jim Marcell (voice)
• 
  Alissa Juvan

  Space Station Astronaut (voice)
• 
  Melissa Graham

  News Anchor
• 
  Tom Christian

  Carl Roberts (as Thomas Christian)
• 
  Bruce Chong

  Dr. Sebastian Lee