Leo Gorcey
Muggs McGinnis
Warren Hull
Officer Tom Brady
Charlotte Henry
Mary Breslin
Bobby Jordan
Danny Breslin
Huntz Hall
Limpy
Bobby Stone
Monk Martin
Eddie Foster
Slats Morrison
Martha Wentworth
Mrs. Brady
Sunshine Sammy Morrison
Scruno
David Gorcey
PeeWee
Donald Haines
Skinny, red-haired kid
Keye Luke
Clancy
Dick Ryan
Police Lieutenant
Pat Costello
Muggs' Trainer
Dennis Moore
Dorgan
Tony Carson
Henchman Dutch
Bill Cartledge
Johnny Ryan, Muggs' opponent
Minerva Urecal
Head of Reform School
Jack Chefe
Henchman Nick
Jack Carr
Milkman George
Jack Mulhall
Cop at Prizefight with the Lieutenant