Jakob Salvati

Pepper Flynt Busbee / Little Boy

Emily Watson

Emma Busbee

Cary-Hiroyuki Tagawa

Hashimoto

Michael Rapaport

James Busbee

David Henrie

London Busbee

Ben Chaplin

Ben Eagle

Eduardo Verástegui

Fr. Crispin

Ted Levine

Sam

Ali Landry Monteverde

Ava

Abraham Benrubi

Teacup

Kevin James

Dr. Fox

Tom Wilkinson

Fr. Oliver

Toby Huss

Colonel Bob

Kelly Greyson

Tyra

Candice Azzara

Bertha

James DuMont

Harvey

Travis T. Flory

Soda Fountain Clerk

Sam Kindseth

Ronnie (Bully 2)

David Ury

Sir Pent

James MacDonald

Recruitment Sergeant

Winston James Francis

Bukha

Lorna Scott

Nurse Barbara

Lukas Behnken

Leonard Rice

Mary Stein

Martha

Ric Sarabia

Mike the Gambler

Eijiro Ozaki

Masao Kume

Masami Kosaka

Commander Tokyo Joe

Scott Subiono

Dr. Hesley

C.K. McFarland

Doris

Matthew Scott Miller

Freddy Fox

Eddie Driscoll

Newsreel Narrator (voice)

Jill Kelly

Spider Lady

Eiji Inoue

Japanese Soldier

Keisuke Akizawa

Japanese Soldier

Barry Ford

The Narrator (voice)

Americus Abesamis

Giant Tokyo Joe

Robert Noble

Lou the Bartender

Zero Kazama

Wild Tokyo Joe (uncredited)

Kaiser Johnson

Col. Peter Stouff (uncredited)

Brian Takahashi

Japanese Soldier #2