Leo Gorcey
Muggs McGinnis
Bobby Jordan
Danny Breslin
Huntz Hall
Limpy
Warren Hull
Officer Tom Brady
Charlotte Henry
Mary Breslin
Keye Luke
Clancy
B
Bobby Stone
Monk Martin
Donald Haines
Skinny, red-haired kid
Sunshine Sammy Morrison
Scruno
David Gorcey
PeeWee
Martha Wentworth
Mrs. Brady
Jack Mulhall
Cop at Prizefight with the Lieutenant
E
Eddie Foster
Slats Morrison
Dennis Moore
Dorgan
T
Tony Carson
Henchman Dutch
P
Pat Costello
Muggs' Trainer
D
Dick Ryan
Police Lieutenant
B
Bill Cartledge
Johnny Ryan, Muggs' opponent (uncredited)
Minerva Urecal
Head of Reform School (uncredited)
Jack Chefe
Henchman Nick (uncredited)
J
Jack Carr
Milkman George (uncredited)