• 
  Patton Oswalt

  Mead (voice)
• 
  Robert Picardo

  Admiral Gillette
• 
  Patrick Warburton

  Timmy the Wunderbot (voice)
• 
  Samuel Hunt

  Friz
• 
  Melissa Young

  Phoebe
• 
  Mary Jo Pehl

  Mercury Base Announcer
• 
  Westan McNew

  Mercury Base Officer Jackson
• 
  Shawn Young

  General Sternhagen

• 
  Nathan Shelton

  Navigator Perry
• 
  Connor J. Matthews

  Gunner Russell
• 
  Ron McAdams

  Medusa Crewmember Criss
• 
  Mickey Stone

  Officer Anderson
• 
  Jason 'Whitey' White

  Jump Ship Pilot 2
• 
  Chris Stanley

  Achilles Officer
• 
  Kassandra Wright

  Tamara

• 
  Andrew McMurtrey

  Officer Jackson
• 
  Jeremy Shelton

  Jump Ship Pilot 1
• 
  M. Scott Thomas

  Medusa Captain Simmons
• 
  Jimmy Wilson

  Medusa Gunner Frehley
• 
  Drew Diveley

  Medusa Pilot Stanley
• 
  Jordan Duke

  Pilot Diaz
• 
  Zach Malott

  Gunner Henderson
• 
  Jonova Lavon

  Pilot Mitchell
• 
  Casper Austin

  Gunner Parker
• 
  Ramon Luis Ramirez

  Achilles F5 Pilot Diaz
• 
  Tris Marie

  Achilles F5 Gunner Henderson
• 
  Ramon Ramirez

  Achilles F5 Pilot Diaz