- as Helen Hawkins
- as Ben Pownall
- as Ryn
- as Ted Pownall
- as Xander McClure
- as Elaine Pownall
- as Maddie Bishop
- as Calvin Lee
- as Levi
- as Katrina
- as Nicole Martinez
- as Doug Pownall
- as Rick Marzdan
- as Ian Sutton
- as Commander David Kyle
- as Beth Marzdan
- as Bryan
- as Janine
- as Viv
- as Sarge
- as Roberta
- as Researcher
- as Dr. Park
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