羅仲謙
Written by Lee Yee-wah, "Tiger Cubs" began pre-production with the backing of the Hong Kong Police Force, which supported the drama with their newest SDU equipment. With a budget of over HK$15 million, each episode took HK$1 million to make, three times more expensive than an average TVB drama production. On 3 January 2011, it was announced that Joe Ma, a former VIPPU officer, and Jessica Hsuan had been cast in the lead roles. On 5 January, a press conference and costume fitting was held at TVB City, Tseung Kwan O. Filming commenced on 20 January and ended in April, taking four months to complete. To keep up with the demanding and flexible physical requirements of the drama, most of the main cast members consistently underwent special training between filming schedules. Him Law, who portrays SDU A-Team officer Yue Hok-lai, reported that he lost about 10 pounds after filming the first episode. On 10 February, guest star Ngo Ka-nin injured his right knee while filming a fight sequence with Dan Jun-wai, who injured his head. A TVB spokesperson later announced that they were both fine. Earlier, Savio Tsang, who portrays SDU A-Team sub leader Yip Shu-fai, was injured in the face by a plastic bullet, and Christine Kuo injured her head from a telephone booth.