- Maxi Witrak
- Commander Nicole Tress
- Ego Mikitas
- Sergei
- Tania Fox
- Akula
- Michael Marcel
- Michael Kelly
- Sandi Todorovic
- Alexei
- Konstantin Podprugin
- Henri
- Lindsey Marie Wilson
- Ellie Waters
- Lydia Hunter
- Josie
- Terrance Livingston Jr.
- Liam
- Michael Deni
- Owen Watson
- Reginald Stalling
- Tom
- Roman Chsherbakov
- Young Sergei
- Tammy Klein
- Mission Control Worker #1 / Engineer Sasha Gilmour
- Mahpara Khan
- Mission Control Worker #2
- Natasha Goubskaya
- Tzarina
- Yelena Savranskaya
- Scar / Russian A.I. (voice)
- April Duran
- Russian Soldier / Scientist
- Dallas Schaefer
- Russian Soldier / Scientist
- Justin Zarodkirwicz
- Russian Soldier / Scientist
- Lisa Derai Weidner
- Russian Soldier / Scientist
- Phillip O'Riley
- Russian Soldier / Scientist
- Phillip Shadeed
- Russian Soldier / Scientist
- Ryan Najpauer
- Russian Soldier / Scientist
- Svetlana Tulasi
- Russian Soldier / Scientist
- Tate McMillan
- Russian Soldier / Scientist
- Trevor Kennedy
- Russian Soldier / Scientist
- Tiffany Smith
- Mission Control
- Deborah Elerick
- Mission Control
- Christopher Genda
- Mission Control
- Mark Anthony Abalantac
- Mission Control
- Melissa Escamilla
- Mission Control
- Ryan Ebert
- KGB Agent
- Oleg Kourov
- KGB Agent
- Mark Anthony Serna
- Mission Control
