Anthony Wong Chau-SangAlan Tam / Director / Writer Dolphin Chan Hoi-HangDolphin / Shark Parkman Wong Pak-ManOfficer Lee Sau Lawrence Ng Kai-WahWong Yu Yan, Anthropologist Teddy Yip Wing-ChoDolphin's Dad Dayo Wong Chi-WahDr. Wong Chang Gan-WingLibrary Cleaner [cameo] Anthony Wong Chau-SangAlan Tam / Director / Writer Tony Leung Siu-HungWriter / Producer Rocky Tsang Chun-ChungDirector Of Photography Raymond Wong Ying-WahOriginal Music Composer 
