• 
  Joanna Lipari

   Antares' Mother
• 
  Danny Tamberelli

   Mark Watney
• 
  Rory Albanese

   Randy Clambake
• 
  John Hennigan

   Buff Cop
• 
  Cheyenne Jackson

   Handsome Cop
• 
  Jeanette Maus

   Hattie Clambake
• 
  Lauren Lopez

   Amber McMillan
• 
  Brian Jordan Alvarez

   Antares

• 
  Ryan W. Garcia

   Gilbert Fleck
• 
  Diane Cortejo

   Young Amber, Additional Roles
• 
  Joshua Walker

   Young Randy, Additional Roles
• 
  Kiana Madani

   Alena
• 
  Elise Metcalf

   Young Guin, Additional Roles
• 
  Jessie Komitor

   Officer Michelle Jones
• 
  Samantha Dockser

   Young Hattie, Additional Roles

• 
  Courtney Hawkins

   Guinevere Fleck
• 
  Richard Bon Bon Centeno

   Young Gil, Additional Roles
• 
  Tim De La Motte

  Marco
• 
  Chad Roberts

  Young Mark, Additional Roles