Leo Gorcey
Terence 'Slip' Mahoney
Huntz Hall
Horace Debussy 'Satch' Jones
Nestor Paiva
Tony 'Piggy' Locarno
Frankie Darro
Cousin Jimmy
Gabriel Dell
Ricky Moreno
Rosemary La Planche
Daisy Harris
David Gorcey
Chuck
William Benedict
Whitey
Nelson Leigh
Fr. O'Hanlon
Mary Gordon
Mrs. Mamie Mahoney
Dewey Robinson
Henchman 'Moose'
Dick Paxton
Henchman 'Jockey'
Thomas Menzies
'Boomer', a boy
Geneva Gray
Josie, his big sister
Buddy Gorman
Andrew T. 'Andy' Miller
Benny Bartlett
Harry 'Jag' Harmon
John Eldredge
Asst. Dist. Atty. John Willis
Robert Emmett Keane
Lawyer Felix Crowe
Tom Coleman
Warehouse Watchman
John Elliott
The Judge
Wilbur Mack
Transfusion Doctor
Wade Crosby
Henchman-Mechanic Mike
Meyer Grace
White-capped Mechanic-Henchman