John Smith/Number Four
Alex Pettyfer
Henri
Timothy Olyphant
Number Six
Teresa Palmer
Sarah
Dianna Agron
Sam
Callan McAuliffe
Mogadorian Commander
Kevin Durand
Mark James
Jake Abel
Sheriff James
Jeff Hochendoner
Nicole
Emily Wickersham
Mr. Simms
Garrett M. Brown
Kevin
Patrick Sebes
Number 3
Greg Townley
Number 3's Guardian
Reuben Langdon
Receptionist
Molly McGinnis
Frank
Brian Howe
Bret
Andrew Owen
Girl on Street
Sophia Caruso
Bret
Andy Owen
Sam's Stepdad
Charles Carroll
Mr. Behrman
L. Derek Leonidoff
Physics Teacher
Sabrina De Matteo
Sarah's Dad
Cooper Thornton
Sarah's Mom
Judith Hoag
Sarah's Brother
Jack Walz
Demented Farmer
Bill Laing
Drew
Beau Mirchoff
Kern
Cody Johns
Teen At Party
Isabella Robbins
MOG Warrior
Damien Walters
MOG Warrior
Jon Braver
MOG Warrior
Kevin Cassidy
MOG Warrior
Matt Leonard
MOG Warrior
Nash Edgerton
MOG Warrior
Carrick O'Quinn
MOG Warrior
Tim Sitarz
MOG Warrior
Steve Upton