Ηθοποιοί επεισοδίου
Roy ScheiderCaptain Nathan Bridger
Jonathan BrandisLucas Wolenczak
Don FranklinCommander Jonathan Ford
Edward KerrLieutenant James Brody
Michael DeLuiseSeaman Anthony Piccolo
Rosalind AllenDr. Wendy Smith
Ted RaimiLieutenant Tim O'Neill
Kathy EvisonLieutenant Lonnie Henderson
Marco SanchezSensor Chief Miguel Ortiz
Peter DeLuiseDagwood
Φρανκ ΓουέλκερDarwin (voice)
Brittany SnowHyperion Child
Μαρκ ΧάμιλTobias LeConte
Kent McCordCommander Scott Keller