Tang Sau (played by Simon Yam) is a protagonist in Insanity.
John's Wife (played by Kathy Chow Hoi-Mei) appears in Insanity.
John Wong (played by Raymond Wong Pak-Ming) appears in Insanity.
Wanted Man (played by Buffalo Tang Tai-Wo) appears in Insanity.
Ken (played by Tony Ling Chi-Wah) appears in Insanity.
Doctor (played by Lau Chiu-Fan) appears in Insanity.
Temple Sticks Reader (played by Leung Sam) appears in Insanity.
Blood Donation Nurse (played by Amy Au-Yeung Suk-Lan) appears in Insanity.
