Bowery Bombshell
Leo Gorcey
Terence Aloysius 'Slip' Mahoney
Huntz Hall
Horace Debussy 'Sach' Jones
Bobby Jordan
Bobby
William Benedict
Whitey
David Gorcey
Chuck
Teala Loring
Cathy Smith
Sheldon Leonard
Ace Deuce Baker
Daun Kennedy
Maizie (as Dawn Kennedy)
James Burke
Detective O'Malley
Vince Barnett
Street Cleaner
William 'Wee Willie' Davis
Moose McCall (as Wee Willie Davis)
William Ruhl
Henchman Spike
Emmett Vogan
Mr. Johnson
Bernard Gorcey
Louie Dumbrowsky
Milton Parsons
Professor Schnackenberger
Lester Dorr
Feather-Fingers
William Newell
Detective Dugan
Eddie Dunn
Police Officer O'Hara
Phil Karlson
Director
Tim Ryan
Dialogue
Edmond Seward
Screenplay
Jan Grippo
Producer
Victor Hammond
Story
Tom Lambert
Sound
William A. Sickner
Director of Photography
William Austin
Editor
Lindsley Parsons
Producer
Theodore Joos
Assistant Director
Richard C. Currier
Supervising Editor
Glenn Cook
Production Manager
Dave Milton
Art Direction
Edward J. Kay
Music Director
Harry Ross
Makeup Artist