Jesse Eisenberg

Casey

Alessandro Nivola

Sensei

Imogen Poots

Anna

Steve Terada

Thomas

David Zellner

Henry

Phillip Andre Botello

Kennith

Jason Burkey

Alex

Mike Brooks

Steve

C.J. Rush

Other Steve

Davey Johnson

Gun Store Owner

Hauke Bahr

Grant

Katherine Martin

Bakery Woman

Cameron Murphy

New White Belt

Nicholas Hulstine

Pickup Truck Driver

Lena Friedrich

French Girl

Louis Robert Thompson

Veterinarian

Dallas Edwards

Manuel

Katherine Smith-Rodden

Store Cashier

Frederic Spitz

French Guy

Alex Haydon

Man Wearing Pants

Mark Sawyer-Dailey

Man Reading Newspaper

Leland Orser

Detective McCallister

Josh Fadem

Serial Killer

Scott Goodman

Drunk Man

Justin Eaton

Lone Man

Caroline Amiguet

French Audio Instructor (voice) (uncredited)