On His Majesty's Secret Service— Full Cast

Louis Koo

as Royal Dog

Barbie Hsu

as Faithful

Louis Fan Siu-Wong

as Lord Unicorn

Sandra Ng Kwan-Yu

as Empress

Yang Jiang

as Forbidden City Cop

Liu Yiwei

as Emperor

Song Jia

as Princess Rainbow

Tong Dawei

as Royal Tiger

Lam Tze-Chung

as Royal Pig

Shi Zhenlong

as Unknown

Law Kar-Ying

as Unknown

Bryan Leung Kar-Yan

as Unknown

Kingdom Yuen King-Tan

as Unknown

Mo Meilin

as Unknown

Lee Kin-Yan

as Unknown