唐·瑞德·巴里

Don 'Red' Barry

饰：Mike O'Hara aka King Cobra (as Don Barry)

汤姆·布朗

Tom Brown

饰：Joe O'Hara

谢拉·瑞恩

Sheila Ryan

饰：Janet Brannigan

玛吉娅·迪安

Margia Dean

饰：Joy White

乔·亚当斯

Joe Adams

饰：Duke (as Joey Adams)

John L. Cason

John L. Cason

饰：Tiger Johnson (as John Cason)

Tony Canzoneri

饰：Swinger

Mark Plant

Mark Plant

饰：Gangster

约瑟夫·奎汉

Joseph Crehan

饰：Oscar

莱尔·塔尔博特

Lyle Talbot

饰：Radio Announcer

Chester Clute

饰：Timid Man

威廉·埃德蒙兹

William Edmunds

饰：Prof. Berger

Michael Vallon

饰：Gambler,(as Mike Vallon)

Edit Angold

饰：Mama Berger

Jimmy Martin

饰：Fight Second

萨姆·弗林特

Sam Flint

饰：Doctor

Frankie Van

饰：Referee

Ned Roberts

饰：Fighter

Buxx Banner

饰：Unconfirmed Child at ringside (uncredited)

Joey Adams

饰：Duke Hensel

哈利·布朗

Harry Brown

饰：Fight Manager

Dan Tobey

Dan Tobey

饰：Fight Announcer