Christopher Showerman

as Tor

as Captain

as Agent Moore

as Pete Nealy

as Impossibly Hot Fireman

as George

as C.O. Walters

as Keith

as Dr. Hamilton Manning

as Police Officer (voice)

as Jonathan Brandt

as Stack

as Dr. Penn / Alpha

as Dr. Kevin Green

as Agent Willis

as Jason Haney

as Derek

as Wendell

as Luke

as Captain Simmons

as Mark

as Man

as The Driver (wraparound story)

as Desmond Gage

as Richard Carson

as Missing Person

as Chris

as Simon Weinreib

as Officer kelly

as Greg

as Henry

as John Smith

as Bill

as Dale

as John the Soundman