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Leo Gorcey as Muggs McGinnis |
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Bobby Jordan as Danny Breslin |
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Huntz Hall as Limpy |
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Warren Hull as Officer Tom Brady |
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Charlotte Henry as Mary Breslin |
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Keye Luke as Clancy |
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Bobby Stone as Monk Martin |
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Donald Haines as Skinny, red-haired kid |
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Sunshine Sammy Morrison as Scruno |
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David Gorcey as PeeWee |
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Martha Wentworth as Mrs. Brady |
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Jack Mulhall as Cop at Prizefight with the Lieutenant |
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Eddie Foster as Slats Morrison |
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Dennis Moore as Dorgan |
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Tony Carson as Henchman Dutch |
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Pat Costello as Muggs' Trainer |
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Dick Ryan as Police Lieutenant |
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Bill Cartledge as Johnny Ryan, Muggs' opponent (uncredited) |
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Minerva Urecal as Head of Reform School (uncredited) |
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Jack Chefe as Henchman Nick (uncredited) |
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Jack Carr as Milkman George (uncredited) |
| Directing | Wallace Fox | Director |
| Writing | Brendan Wood | Story |
| Writing | Donn Mullahy | Story |
| Writing | Sam Robins | Screenplay |
| Writing | Carl Foreman | Writer |
| Production | Sam Katzman | Producer |
| Production | Pete Mayer | Producer |
| Editing | Robert Golden | Editor |
| Art | Fred Preble | Set Decoration |
| Production | Ed W. Rote | Production Manager |
| Camera | Marcel Le Picard | Director of Photography |
| Sound | Lew Porter | Music Director |
| Sound | Johnny Lange | Music Director |
| Directing | Arthur Hammond | Assistant Director |
| Directing | Harry M. Slott | Assistant Director |
| Sound | Glen Glenn | Sound |
| Sound | Lew Porter | Original Music Composer |
