Obsada

• Anthony Quinn — Louis 'Mountain' Rivera
• Stanley Adams — Perelli (as Stan Adams)
• Val Avery — Young fighter's promoter
• Muhammad Ali — Himself (as Cassius Clay)
• Lou Gilbert — Dr. Gilbert
• Michael Conrad — Ma Greeny's Thug
• Rory Calhoun — Himself
• Jackie Gleason — Maish Rennick
• Mickey Rooney — Army
• Julie Harris — Grace Miller
• Madame Spivy — Ma Greeny
• Herbie Faye — Charlie, the Bartender
• Jack Dempsey — Himself