Male, also known as Sir Mo or Sergeant Mo, a notoriously critical superior officer in the West Kowloon Regional Crime Unit. He supervised Zhu Qing during her first Armed Robbery Case and praised her as a rare talent with relentless drive. At the Sheng villa crime scene, he assigned search areas and tested Zhu Qing's observation skills. He was displeased that Zhu Qing did not take notes during his instructions.
