The Delinquent

Wang Chung

John Sum / Shen Chang

Lily Li

Elaine / Huang Lan

Betty Pei Ti

Fanny

Lu Ti

Mr. Sum (Shen)

Tung Lin

Boss Lam

Fan Mei-Sheng

Big Sean

Wang Kuang-Yu

Big Sean's Gangster

Dean Shek Tin

Cripple

Shum Lo

Butcher (Stepfather)

Chan Chuen

Top Fighter at Martial Arts School (uncredited)

Chan Dik-Hak

Rascal at Basketball Court (uncredited)

Chan Siu-Kai

Big Sean's Gangster (uncredited)