- Alain Blazevic - Karel Lamac
- Heino Ferch - Max Machon
- Arved Birnbaum - Hans v. Tschammer u. Osten
- Elliot Cowan - Alan Walken
- Klaus Schindler - Surgeon Major Schönn
- Enad Licina - Jack Sharkey
- Manfred Wolke - Sharkey's Trainer
- Ulli Wegner - Vogt's Trainer
- Andreas Franke - Joe Louis Opponent #1
- Rüdiger May - Joe Louis Opponent #3
- Stipe Drviš - British Boxer #4
- Peter Gilbert Cotton - Arthur Brisbane
- Hans-Eckart Eckhardt - Jim Farley
- Andreas von Thien - Announcer #1
- Tom Sommerlatte - Young Soldier
- Micki Bertling - SA Senior Troop Leader Freilach
- Angelina Noa - First Aid Nurse Maria
- Frank Raffel - First Aid Radio Operator
- Martina von Orten - Housekeeper Lilly
- Bernd Lambrecht - British Admin. Officer
- Sven Medvešek - Cabaret Host
- Vanessa Radman - Mrs. Damski
- Davorka Tovilo - Cigar Girl
- Barbara Prpić - Housekeeper Martha
- Josip Perica - Hermann Heller
- Besim Mujacic - Referee #1
- Uwe Boll - Referee #2
- Bernard Ban - Referee #3
- Walter Knieps - Referee #4
- Alexander Frenkel - Young Stribling
- Darko Milas - Stribling's Father
- Tomislav Grbavac - Page Boy
- Luka Peroš - Referee Smith / Journalist #2
- Dražen Bratulić - SA Man
- Damir Dolar - Joe Louis Opponent #2
- Luka Dragić - Man in Uniform
- Vjekoslav Janković - Aide of V. Tschammer
- Željko Šestic - Hotel Receptionist
- Benedikt Bravenz - Newspaper Boy #1
- Karlo Pervan - Newspaper Boy #2
- Igor Barberić - Member RMVP
- Dunja Sepčić Bogner - Anny's Neighbor Elizabeth Grohmann
- Kristijan Mandaric - Neighbor Boy Reinhard Grohmann
- Robert Jozinović - Journalist #1
- Dušan Bućan - Journalist #3
- Goran Manić - SA Man #2
- Mark Boldin - Taxi Driver
- Luka Šatara - Werner Lewin
- Ilija Ante Lovric - Henry Lewin
- Sven Jakir - Kristallnacht Rioter
- Marinko Leš - Farmhand
- Vili Matula - Armed Forces Officer
- Srecko Borše - Supervisor
- Mile Kekin - Gym Owner
- Saša Ivkanec - British Boxer #1
- Marko Barišic - British Boxer #2
- Antonio Ćurić - British Boxer #3
- Slavko Kurjacki - Hamburg Referee
- Leon Tomic - Messenger Boy
- Vladimir Tintor - Reporter #1
- Taanasa Bunnell - Joe Louis' Mother
- Jadranka Tinic Mijatovic - Ring Woman
- Nikolina Komljenovic - Juggler #1
- Nikola Mijatovic - Juggler #2
- Davor Peršic - Juggler #3
- Niko Radaš - Jazz Band Member
- Nenad Grahovac - Jazz Band Member
- Matej Huljev - Jazz Band Member
- Toni Starešinic - Jazz Band Member
- Jakša Kriletic - Jazz Band Member
- Igor Dorotic - Jazz Band Member
- Fabian Huebner - Nazi Officer
- Steffen Kuhr - Belt bearer
- Željko Mavrović - Boxing Manager #2
- Joe J. Thomas - Sports Reporter (voice)
- Michael Becker - Hamburg Boxer
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Edward Buzzell
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Edward Buzzell, Devery Freeman, Philip Rapp
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