Nick Cheung Ka-Fai as Blue

Louis Koo as Shiu Chi-Long

Francis Ng Chun-Yu as Q sir/Inspector Q

Charmaine Sheh Sze-Man as Ding Siu-Ka

Benz Hui Siu-Hung as Foon Hei-Gor

Li Guangjie as Tung Pak-Ho

Zhang Huiwen as Siu Ying

Xing Yu as sniper / assassin

Cheng Taishen as Kwok Ming

Moses Chan Ho as Police superintendent

Louis Cheung as Guy blocking Blue at meeting

Clara Lee as Assassin

Ben Yuen Foo-Wah as Uncle Heen

Choi Kwok-Hing as Master Fung

Jade Leung Chang as Karina

Rebecca Zhu as Samantha, CIB detective

Jimmy Au Shui-Wai as Hong Sir

Timothy Cheng Chi-Sing as Lin Dongyou

Jason Wong as Kwok Ming's thug

Phat Chan as

Lo Hoi-Pang as

MJ Chan as

Bob Lam Shing-Ban as

Paco Yick Tin-Hung as

Ken Law Ho-Ming as

Andy Wong Chi-Man as

Alice Fung So-Bor as

Edward Chui Wai-Tung as