Robin Dunne
Dean
Robert Knepper
Dr. Abbot
Sunny Mabrey
Sara
Amelia Cooke
Amelia
Christopher Neame
Dr. Nicholas Turner
Patricia Bethune
Colleen
Michael Warren
Agent Wasach
Natasha Henstridge
Eve
John Paul Pitoc
Hastings
Joel Stoffer
Portus
James Leo Ryan
Yosef
Savanna Fields
Young Sara
Reed Frerichs
ISD Staffer
Marc D. Wilson
Crew Chief
Matthew Yang King
Specialist Robert Kelley
Rick Dean
Cobb the Gas Station Guy
Christopher R. Gillum
Young Portus
Billy Bacon
Commander
Jim Cody Williams
Farmer at Gas Station
Mark Zecca
Tour Guest
Sean C. Ching
Grad Student
Dan Wells
Jake
Frank Crim
Communications Officer
Boni Yanagisawa
Female Student
Rob Hinderstein
Security Guard #1
Carl Ciarfalio
Security Guard #2
Troy Blendell
Autopsy Tech
Keith Camire
Military Soldier (uncredited)
Josh Cook
Jock (uncredited)
Joss Gomez
Student (uncredited)
Kari Ann Peniche
Cheerleader (uncredited)
Jason Sarcinelli
Adult Male Alien (uncredited)
Marc Scizak
Football Player (uncredited)