Tony Leung Chiu-wai as Chow Mo-wan

Maggie Cheung as Su Li-zhen

Gong Li as Black Spider

Faye Wong as Wang Jing-wen

Takuya Kimura as Tak

Dong Jie as Wang Jie-wen

Carina Lau as Lulu / Mimi / Android

Zhang Ziyi as Bai Ling

Chang Chen as Mimi's Boyfriend

Thongchai McIntyre as Bird

Siu Ping-Lam as Ah Ping

Wang Sum as Mr. Wang / Train Captain

Farini Cheung Yui-Ling as Party Girl

Cheung Sien as Party Girl

Akina Hong Wah as Party Girl

Fei-lin Miao as Party Girl

Jiang Xinyu as Robot Girl

Benz Kong To-Hoi as Brother Hoi

Ronny Ching Siu-Lung as Dabao

Alice Lee as Hostess

Li Hsiao-Ming as Bellhop

Berg Ng Ting-Yip as Wan's Party Friend

Ben Yuen Foo-Wah as Wan's Party Friend