Kai (Romeo Must Die)

Kai is one of villains in 2000 Action-Romance film Romeo must Die is bodyguard who worked with Ch'u Sing and killed his son Po Sing

About
Kai was good friend of Sing who sent him as bodygaurd of his son Po Sing who is heir of his father's empire when Po call Colin O'Day who worked with family business about warning about waterfront properties and gang war, Shing had no choice but sent Kai to kill own son at nightclub when  after a fight with the bouncers before the meeting can supposedly met Colin. Po's brother and Sing's brother Han who escaped to USA from China to invegstion of brother's death and meeting with Colin's sister Trish O'Day who is unaware