Cast & crew
The Twins Effect (2003)
Directed by Dante Lam Chiu-Yin Written by Chan Hing-Kai, Jack Ng Wai-Lun
Cast
| Edison Chen | Kazaf |
| Charlene Choi Chuek-Yin | Helen |
| Gillian Chung | Gypsy |
| Ekin Cheng Yee-Kin | Reeve |
| Jackie Chan | Jackie Fong |
| Karen Mok Man-Wai | Ivy |
| Josie Ho | Lila |
| Anthony Wong | Prada |
| Spencer Lam Seung-Yi | Jackie's father |
| Mickey Hardt | Duke Dekotes |
| Chapman To Man-Chat | Man Keung |
| Matt Chow Hoi-Kwong | Matt |
| Ricardo Mamood-Vega | Ethan |
| Mandy Chiang Nga-Man | Momoko |
| Maggie Lau | Nurse Maggie |
| Winnie Leung Man-Yee | Deborah |
| Cheung Tat-Ming | Jackie's Best Man |
| Bey Logan | Vampire John |
| Marky Lee Campbell | Vampire Boz |
| Philip Chen | Vampire Lebrow |
| Don Ferguson | Vampire Train |
| Robert Meister | Vampire Elron |
| Philip Ng Wan-Lung | Ambulance Vampire |
| Simon Robida | Vampire Zoolander |
| So Tung | Vampire Fighting Reeve in Alley |
| Digger Mesch | Vampire Thomas |
| Daniel O'Neill | Vampire Dan |
| Mark Strange | Vampire Smashing |
| Matthew Sturgess | Vampire Food |
| Daniel Whyte | Vampire Ice |
| Chan Hing-Kai | |
| Jackie Ng | |
| Ryûki Kitaoka | |
| Lee In-Seop | Fighter |
| Andrew Yan Hua | Fighter |
| Yumiko Cheng Hei-Yi | |
| Jack Wong | |
| Michael Clements | Vampire Nobals |
| Yu Kang |
Crew
| Lee In-Seop | Stunts |
| Lee In-Seop | Stunt Double |
| Bey Logan | Associate Producer |
| Donnie Yen | Co-Director |
| Andrew Yan Hua | Stunts |
| Dante Lam Chiu-Yin | Director |
| Alex Mok Siu-Chung | Assistant Art Director |
| Donnie Yen | Action Director |
| Bill Lui Cho-Hung | Art Direction |
| Chan Hing-Kai | Writer |
| Jack Ng Wai-Lun | Writer |
| Tao Ling | Production Coordinator |
| Fiona Chow | Production Coordinator |
| Eddie Wong Chi-Pan | Production Assistant |
| Wu Gang | Stunts |
| Comfort Chan | Original Music Composer |
| Cheung Man-Po | Director of Photography |
| Kenneth Yee | Art Direction |
| Kenji Tanigaki | Stunts |
| Yu Kang | Stunts |