Chloë Grace Moretz

Cassiopeia "Cassie" Sullivan

Nick Robinson

Ben "Zombie" Parish

Ron Livingston

Oliver Sullivan

Maggie Siff

Lisa Sullivan

Alex Roe

Evan Walker

Maria Bello

Sergeant Reznik

Maika Monroe

Marika "Ringer" Kimura

Zackary Arthur

Sammy "Nugget" Sullivan

Liev Schreiber

Lieutenant Colonel Alexander Vosch

Tony Revolori

Dumbo

Talitha Eliana Bateman

Allison / "Teacup"

Nadji Jeter

Poundcake

Alex MacNicoll

Flintstone

Matthew Zuk

Wounded Man with Crucifix

Gabriela Lopez

Lizbeth Morgan

Bailey Anne Borders

Julia

David Maldonado

Soccer Coach

Paul Ryden

TV News Anchor

E. Roger Mitchell

White House Spokesman

Charmin Lee

Ms. Paulson

Parker Wierling

Jeremy

Madison Staines

Teary School Kid

Terry Serpico

Hutchfield

Derek Roberts

Private Parker

Geoffrey Kennedy

Bullhorn Soldier

Devin McGee

Confused Man

Justin Smith

Armed Man

Jim Sutton

Soldier Calling Numbers

Adora Dei

Exam Room Tech

Kevin L. Johnson

Sniper in Woods

Cade Canon Ball

Kenny / "Oompa"

Flynn McHugh

Tank

Courtney Munch

Helicopter Soldier

Kendrick Cross

Situation Room Soldier

Chelsea Hayes

Tech Soldier

Michael Beasley

Major Bob

Olivia Cloer

Captured Teen (uncredited)

Kelly Róisín

Quarantine Victim (uncredited)

Johnny Otto

Dr. Osborne (uncredited)