Louis Koo Tin-Lok (Chinese: 古天樂; born 21 October 1970) is a Hong Kong actor and movie producer. He shot to fame doing television dramas with Hong Kong's TVB network. Since the 2000s, he has focused entirely on film. The actor works closely with Hong Kong-based directors such as Johnnie To and Benny Chan, and has set up his own movie production company in 2013. One Cool Group, a film production company that has become a major player in the Asian film industry. He is also the president of the Hong Kong Performing Artistes Guild and the Federation of Hong Kong Filmmakers. A well-known figure of Hong Kong cinema including investor, and entrepreneur.