Andy Lau Tak-Wah. Andy Lau Tak-Wah was 44 in Wait 'Til You're Older as 'Kwong'.
Gordon Lam Ka-Tung. Gordon Lam Ka-Tung was 38 in Wait 'Til You're Older as 'Vice Principal'.
Felix Wong Yat-Wah. Felix Wong Yat-Wah was 44 in Wait 'Til You're Older as 'Chan Man'.
Cherrie Ying Choi-Yi. Cherrie Ying Choi-Yi was 22 in Wait 'Til You're Older as 'Miss Lee'.
Feng Xiaogang. Feng Xiaogang was 47 in Wait 'Til You're Older as 'Vagabond in park'.
Howard Sit Lap-Yin. Howard Sit Lap-Yin was 11 in Wait 'Til You're Older as 'Kwong Kid'.
Li Bingbing. Li Bingbing was 32 in Wait 'Til You're Older as 'Kwong's Mum'.
Nicola Cheung Sun-Yuet. Nicola Cheung Sun-Yuet was 29 in Wait 'Til You're Older as 'Miss Wong'.
Kristal Tin Yui-Nei. Kristal Tin Yui-Nei was 28 in Wait 'Til You're Older as 'Policewoman'.
Chapman To Man-Chat. Chapman To Man-Chat was 33 in Wait 'Til You're Older as 'Policeman'.
Jacky Wong Shu-Hei. Jacky Wong Shu-Hei was 7 in Wait 'Til You're Older as 'Billy'.Simon So Kwok-Ho. Simon So Kwok-Ho was >> in Wait 'Til You're Older as 'Jack'.
Joe Cheung Tung-Cho. Joe Cheung Tung-Cho was 61 in Wait 'Til You're Older 
Teddy Chan Tak-Sum. Teddy Chan Tak-Sum was 47 in Wait 'Til You're Older as 'Director, Producer'
Anthony Pun Yiu-Ming. Anthony Pun Yiu-Ming was >> in Wait 'Til You're Older as 'Director of Photography'Susan Chan Suk-Yin. Susan Chan Suk-Yin was >> in Wait 'Til You're Older as 'Writer'Cheung Chi-Gwong. Cheung Chi-Gwong was >> in Wait 'Til You're Older as 'Producer, Writer'
Karen Mok