Bruce Bennett
— Hal "Chopper' Donovan, aka Hal Smith
Jeanne Martel
— Katherine 'Kay' Conrad
Fuzzy Knight
— Spider
J. Farrell MacDonald
— Bill 'One-Punch' Fagin
Guinn 'Big Boy' Williams
— Slug Cassidy
Dickie Jones
— Dickie Martin
Charles Williams
— Meggs, the Reporter
John Elliott
— Jim Conrad
William Benedict
— Monk, Tall Kid
Jack 'Tiny' Lipson
— Duncan