On His Majesty's Secret Service_
Louis Koo plays 009, or translated literally from its aural pronunciation, double-O Dog. He's one of 12 special Royal Bodyguards of a simpleton Emperor (Liu Yiwei) who named these 12 guards after the Chinese Zodiac, hence 9 translated to Dog. Unlike his peers, Dog is a scientist, and relies pretty much on his brains and fantastical gadgets to protect his Majesty from evil ninja assassins.
Starring
Louis Koo, Barbie Hsu, Louis Fan Siu-Wong
Updated Feb 16, 2026
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Year context
On His Majesty's Secret Service was released 17 years ago in 2009.
Overview
Louis Koo plays 009, or translated literally from its aural pronunciation, double-O Dog. He's one of 12 special Royal Bodyguards of a simpleton Emperor (Liu ...
On His Majesty's Secret Service is a Comedy, Action film with a runtime of 1h 37m.
CAST (16)
Louis Koo
Royal Dog
Barbie Hsu
Faithful
Louis Fan Siu-Wong
Lord Unicorn
Sandra Ng Kwan-Yu
Empress
YJ
Yang Jiang
Forbidden City Cop
Liu Yiwei
Emperor
Song Jia
Princess Rainbow
Tong Dawei
Royal Tiger
Lam Tze-Chung
Royal Pig
Shi Zhenlong
Law Kar-Ying
Bryan Leung Kar-Yan
Kingdom Yuen King-Tan
Mo Meilin
Lee Kin-Yan
朱峰
DETAILS
FREQUENTLY ASKED QUESTIONS
What is On His Majesty's Secret Service about?
Louis Koo plays 009, or translated literally from its aural pronunciation, double-O Dog. He's one of 12 special Royal Bodyguards of a simpleton Emperor (Liu Yiwei) who named these 12 guards after the Chinese Zodiac, hence 9 translated to Dog. Unlike his peers, Dog is a scientist, and relies pretty much on his brains and fantastical gadgets to protect his Majesty from evil ninja assassins.
How long is On His Majesty's Secret Service?
On His Majesty's Secret Service has a runtime of 97 minutes (1h 37m).
Who stars in On His Majesty's Secret Service?
The cast of On His Majesty's Secret Service includes Louis Koo, Barbie Hsu, Louis Fan Siu-Wong, Sandra Ng Kwan-Yu, Yang Jiang.
What is the rating of On His Majesty's Secret Service?
On His Majesty's Secret Service has a rating of 4.7 out of 10 based on 20 votes on TMDB.
GENRES (2)
Comedy
Action