Liu is quite protective, especially over those who he considers close and important to him. He was always considered to be the overly defensive and courageous one among his family and friends. At times, he can be straightforward, as Liu isn't afraid of confrontations or standing up to people, and refuses to take mistreatment from anyone. But due to his alternate personality, Sully's influence, he can ultimately change from his normal self into a violent, vicious, and dangerous serial killer.