Eddie Kwan Lai-Kit

as Lun Liren (1 episode)

as Lau Biu (25 episodes)

as Meng De (12 episodes)

as Kwok Chung-shek (25 episodes)

as 黄药师

as Man Wing Keung/Man Sir {Head Boss} (25 episodes)

as ICAC director of investigation

as Jiu Lik Wang (James) (25 episodes)

as Yu Sir

as Ko Man Kin (50 episodes)

as Lin Xuyao [Lin Bijun's father] (60 episodes)

as Pong Ying Tin (33 episodes)

as Lei On Lup / "Hugo" (28 episodes)

as Ruan Bin (48 episodes)

as Steven Shum Chi-ngo (25 episodes)