Mad Detective

Lau Ching-wan

Inspector Chan Kwai Bun

Andy On Chi-kit

Inspector Ho Ka-on

Gordon Lam Ka-tung

Ko Chi Wai

Kelly Lin Hsi-lei

May Cheung

Karen Lee Choi-Ling

Gigi

Joseph Lee Kwok-Lun

Wong Kwok Chu

Cheung Siu-fai

Violent Man - Ko's Inner Personality

Lam Suet

Fatso - Ko's Inner Personality

Jay Lau Kam-Ling

Calculating Woman - Ko's Inner Personality

Jeff Cheung Ka-Kit

Ko's Inner Personality

Lu Ching-ting

Ko's Inner Personality

Chiu Chi-shing

Ko's Inner Personality

Hung Wai-Leung

Ko's Inner Personality

Flora Chan Wai-Shan

May Cheung in Bun's Eyes

Jonathan Lee Yat-Sing

Weak Boy - Ho's Inner Personality