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.
Unfortunately the movie On His Majesty's Secret Service is not yet available on HBO Max.
| Sound | Kin Law | Music |
| Editing | Kar-wing Lee | Editor |
| Directing | Wong Jing | Director |
| Production | Han Sanping | Executive Producer |
| Production | Wong Jing | Producer |
| Production | Venus Keung Kwok-Man | Producer |
| Production | Tsai Mu Ho | Executive Producer |
| Camera | Venus Keung Kwok-Man | Director of Photography |