Cast & crew
The Lunatics (1986)
Directed by Derek Yee Written by Derek Yee
Cast
| Stanley Fung Shui-Fan | Tsui |
| Deanie Ip | Lau |
| Paul Chun Pui | Tsuen |
| Dennis Chan Kwok-San | Ming |
| Chow Yun-Fat | Chung |
| Tony Leung Chiu-wai | Uptown Doggie |
| Season Ma | Teacher |
| John Shum Kin-Fun | Dr Chaleck |
| Ma Suk-Jan | Crazy 88 |
| Lai Suen | Bubba's Mother |
| Lo Hung | Tsuen |
| Cheung Hei | Arkham Lunatic |
| Wan Seung-Lam | Zhao Hongyin |
| Lui Hung | Biker Customer |
| Jeffrey Ho Wai-Lung | Melartin's Wife |
| Ng Kwok-Kin | Policeman |
| Cho Yuen-Tat | Female Journalist |
| Tam Bo | Tenant |
| Cheung Chi-Ping | |
| So Cho-Yee | Miss Catherine |
Crew
| Derek Yee | Director |
| Derek Yee | Writer |
| John Shum Kin-Fun | Producer |
| Tang Siu-Lam | Original Music Composer |
| Philip Chan Fei-Lit | Original Music Composer |
| Wilson Chan Pui-Ka | Director of Photography |
| Yuen Bun | Action Director |
| Cheung Kwok-Kuen | Editor |
| Yuen Bun | Stunts |