Keanu Reeves character Klaatu
Jennifer Connelly character Helen Benson
Jaden Smith character Jacob Benson
Kathy Bates character Regina Jackson
John Cleese character Professor Barnhardt
Jon Hamm character Michael Granier
Kyle Chandler character John Driscoll
Robert Knepper character Colonel
Brandon T. Jackson character Target Tech
James Hong character Mr. Wu
Jake McLaughlin character Soldier
John Rothman character Dr. Myron
Sunita Prasad character Rouhani
Juan Riedinger character William Kwan
Sam Gilroy character Tom
Tanya Champoux character Isabel
Rukiya Bernard character Student
Mousa Kraish character Yusef
J. C. MacKenzie character Grossman
Kurt Max Runte character Civil Engineer
Daniel Bacon character Winslow
Reese Alexander character Sergeant
Richard Keats character Helicopter Scientist #1
Bill Mondy character Helicopter Scientist #2
Judith Maxie character Helicopter Scientist #3
Serge Houde character Scientist #1
Lorena Gale character Scientist #2
Stefanie Samuels character Guardswoman
Richard Tillman character Army Sergeant
Camille Atebe character NYPD #1
Thomas Bradshaw character NYPD #2
Terence Dament character NYPD #3
Patrick Sabongui character Soldier #1
Jacob Blair character Soldier #2
Shaine Jones character Soldier #3
George Sharperson character Cop
Shaker Paleja character Medic #1
Douglas Chapman character Medic #2
Marci T. House character Medic #3
Aaron Craven character Technician
Roger Cross character General Quinn
Heather Doerksen character Regina's Aide
Hiro Kanagawa character Dr. Ikegawa
Craig Stanghetta character Grey Man
Stefan Busse character Grey Man
Dean Redman character Military Policeman
David Richmond-Peck character Polygraph Operator
Andrew Wheeler character Guardsman
Darien Provost character Little Boy
Daniel St. Andrews character Train Passenger #1
Brad Dryborough character Train Passenger #2
Ken Kirzinger character Arguing Evacuee
William 'Big Sleeps' Stewart character Transit Cop
Blair Redford character Army Fighter Pilot #1
Daniel Wisler character Army Fighter Pilot #2
Mark Kogan character Air Traffic Controller
Ed Fong character Wu's Grandson
Sandy Colton character Army Corps Engineer Captain
Ty Olsson character Flash Chamber Colonel
Jay-Nicolas Hackleman character State Trooper
Dawn Chubai character News Anchor
Joshua Close character Flash Chamber Engineer
Leanne Adachi character Flash Chamber Tech
Geoff Meed character Field Commander Communications Officer
Michael Hogan character General
Ben Cotton character Truck Driver
Kevan Kase character Pickup Truck Driver
Josue Aguirre character Humvee Soldier
Matt Adler character (voice)
