Andy Lau as Zhan Zhao / Imperial Cat

Cecilia Cheung as Bai Yutong / Shining Mouse

Anthony Wong as Judge Pao

Guo Donglin as Prince Xiang Yang

Li Bingbing as Ms Yue Hua

Wu Yue as Pang Yu

Cheung Tat-Ming as The Emperor

Ma Qianshan as Empress

Xie Jiaqi as Lu Fang (Flying Mouse)

Chapman To Man-Chat as Han Zhang (Striding Mouse)

Lam Tze-Chung as Xu Qing (Drilling Mouse)

Ronnie Cheung Ho-Lung as Jiang Ping (Diving Mouse)

Wong Yat-Fei as Chang Qi Dan

Miao Haojun as Gongsun Ce

Ma Zijun as Imperial Councilor Pang

Jonathan Cheung Wing-Hong as Zhang Long

Cui Lin as Zhao Hu

Wen Yang as Wang Chao

Gao Lei as Ma Han

Jiang Guoyin as Eunuch Chun Lim

Guan Shuntian as Guo An

Ma Ke as Chang Xi

Zhang Li as Bing Taisui

Jin Shuhui as Qi Qi

Zhao Ke as Ba Ba

Wu Dan as Jiu Jiu

Sun Guitian as Grandmother Heung

Ban Jiajia as Single girl