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

Mike Donovan