Kwok Man Bun / Zero / Kwok Man Shing

Nick Cheung

May Chou

Zhang Yishang

Wong Sir

Patrick Tam Yiu-Man

Lai Kei Chow

Lee Wai Lam

Niki Chow Lai-Kei

Kevin

Liang Yongqi

Ma Tong Tat

Sammy Hung Tin-Chiu

James

Michael Tong Man-Lung

Chor Hei

Bao Wenjing

Director of the Orphanage

Du Juan

Peter

Wang Zun

Lawyer

Lam King-Kong

Wang Zhe

Wang Xin

May's Father

Andy Lee Do-Yue

May Chou's Mother

Wang Siqin

Nurse Chan

Ying Xue

Kwok's Mother

Wang Yuan