Leo Gorcey
— Slip Mahoney
Huntz Hall
— Sach
Gabriel Dell
— Gabe Moreno
Frankie Darro
— Johnny Higgins
Lyle Talbot
— Blinky Harris
William Benedict
— Whitey
David Gorcey
— Chuck
Benny Bartlett
— Butch
Bert Conway
— Dynamite Carson, the Champ
Evelyn Eaton
— Bunny Talbot (as Evelynn Eaton)
Bernard Gorcey
— Louie
Teddy Infuhr
— Boomer Higgins
Ben Welden
— Lefty Conlin
Dorothy Vaughan
— Mrs. Higgins
Sam Hayes
— Bill Radar, Sportscaster
Bill Cartledge
— Fighter Joey Prince
Paul Maxey
— Editor
Stanley Andrews
— Boxing Commissioner