Josephine Siao Fong-Fong
— Wong Fuk-Mui/Bat Girl/Barbara/woman
Lui Kei
— Sze Wai
鄭君綿
— James Bond
石堅
— Wu Wan-Lung
沈澱霞
— Chan Kwong-ying
金雷
— marksman
Siu Kuk-Hung
— Sze Wai's younger sister
Lok Gung
— inspector
Lai Man
— Sze's mother
許瑩英
Yung Yuk-Yi
— Wong's Mother/ strange woman
Chan Siu-Pang
— marksman