Jakob Salvati as Pepper Flynt Busbee / Little Boy

Emily Watson as Emma Busbee

Cary-Hiroyuki Tagawa as Hashimoto

Michael Rapaport as James Busbee

David Henrie as London Busbee

Ben Chaplin as Ben Eagle

Eduardo Verástegui as Fr. Crispin

Ted Levine as Sam

Ali Landry as Ava

Abraham Benrubi as Teacup

Kevin James as Dr. Fox

Tom Wilkinson as Fr. Oliver

Toby Huss as Colonel Bob

Kelly Greyson as Tyra

Candice Azzara as Bertha

Rick Mora as Kid Falcon

James DuMont as Harvey

Travis T. Flory as Soda Fountain Clerk

Sam Kindseth as Ronnie (Bully 2)

David Ury as Sir Pent

James MacDonald as Recruitment Sergeant

Winston James Francis as Bukha

Lorna Scott as Nurse Barbara

Lukas Behnken as Leonard Rice

Montserrat Espadalé as Sister Paulette

Mary Stein as Martha

Masashi Odate as Japanese Colonel

Theodora Greece as Eliza the Girl on Beach

Ric Sarabia as Mike the Gambler

Eijiro Ozaki as Masao Kume

Jennifer Cadena as Army Nurse

Masami Kosaka as Commander Tokyo Joe

Matthew J. Cates as Ed

Scott Subiono as Dr. Hesley

Aaron Leddick as Red Cross Soldier

J. Skylar Testa as Army Medic

Alex Trevino as Wounded Soldier at Hospital

Eduardo Gomez Monteverde as Wounded Soldier

C.K. McFarland as Doris

Michael D. Nye as Gilliam

Matthew Scott Miller as Freddy Fox

Eddie Driscoll as Newsreel Narrator (voice)

Jill Kelly as Spider Lady

Eiji Inoue as Japanese Soldier

Keisuke Akizawa as Japanese Soldier

Tokio Sasaki as Young Japanese Soldier

Tommy Lamey as Fisherman #1

Kenny Davis as Fisherman #2

Fernando Sur as Kid at Ben Eagle show

Barry Ford as The Narrator (voice)

Yoshio Iizuka as Samurai Master

Ike Kawaguchi as Samurai Warrior in Dojo

Americus Abesamis as Giant Tokyo Joe

Kenji Nakamura as Guardian Tokyo Joe

Robert Noble as Lou the Bartender

Chuck Lines as Prisoner of War

Jon Bangle as Prisoner of War

Zero Kazama as Wild Tokyo Joe (uncredited)

Kaiser Johnson as Col. Peter Stouff (uncredited)

Luke Custer as Prisoner of War (uncredited)

Brian Takahashi as Japanese Soldier #2

Andy Geller as Dr. Foley

Lawrence Thomas as Lighthouse Man

Jared Jacobsen as Platoon Commander

Mitchell Hesley as Recruitment Officer at Bus

Peter T. Mai as Japanese Samurai

Pietro Schito as Prisoner of War

Logan Ludwig as Jack the Bully

Larry Dean as Barber #1

Raquel Vázquez Gutiérrez as Jenny the Ticket Agent

Elijah Villegas as Kid Saying Fight

Janet Worner as Spider Lady #3

Janice Matthews as Spider Lady #4

Bruce Morningstar as George

Kate Shalander as Lady #1

Cole Hurst as Kid at Fight

Craig Strawn as Barber #2

Tim Staples as Soldier at Hospital

Rene Flores as Photographer

Michael Coates as Marine

Brian Hatch as Man in Church

Miguel Angel Varela Fimbres as Red Cross Soldier #2

Carsen Warner as voice actor