Jennifer Tse Ting-TingJennifer Tse Ting-Ting was 32 in Knock Knock Who's There as 'Yan'.
Kate Tsui Tsz-ShanKate Tsui Tsz-Shan was 36 in Knock Knock Who's There as 'Shou Yung'.
Annie Liu Xin-YouAnnie Liu Xin-You was 34 in Knock Knock Who's There as 'Isabella'.
BabyJohn Choi Hon-YikBabyJohn Choi Hon-Yik was 28 in Knock Knock Who's There as 'Roy'.
Venus Wong Man-YikVenus Wong Man-Yik was 23 in Knock Knock Who's There as 'Carmen'.
Simon Lui Yu-YeungSimon Lui Yu-Yeung was 51 in Knock Knock Who's There as 'Florist'.
Carrie Ng Ka-LaiCarrie Ng Ka-Lai was 51 in Knock Knock Who's There as 'Florist Boss'.
Eric Kwok Wai-LeungEric Kwok Wai-Leung was 41 in Knock Knock Who's There as 'Market Sun'.
Carlos Chan Ka-LokCarlos Chan Ka-Lok was 28 in Knock Knock Who's There as 'Harry'.
Leung Kin-PingLeung Kin-Ping was 55 in Knock Knock Who's There as 'Uncle Yi'.
Violet Lee YingViolet Lee Ying was 62 in Knock Knock Who's There as 'Isabella's Mother'.
Cheng Chu-FungCheng Chu-Fung was 61 in Knock Knock Who's There as 'Funeral Home Staff'.
Ruth TsangRuth Tsang was 46 in Knock Knock Who's There as 'Funeral Home Staff'.Carrie Ng Ka-LaiCarrie Ng Ka-Lai was 51 in Knock Knock Who's There as 'Director'
Paco Yick Tin-HungPaco Yick Tin-Hung was >> in Knock Knock Who's There as 'Action Director'
Jimmy Cheng Man-HoJimmy Cheng Man-Ho was >> in Knock Knock Who's There as 'Writer'Kom Chun-yuKom Chun-yu was >> in Knock Knock Who's There as 'Assistant Script'
Rebecca Zhu
Anne Heung Hoi-Lam