Xu Shang-Chi is a fictional character portrayed by Simu Liu in the Marvel Cinematic Universe (MCU) multimedia franchise, based on the Marvel Comics character of the same name. In the franchise, Shang-Chi is the son of Ying Li and Wenwu, the founder and first leader of the Ten Rings terrorist organization. Trained to be a highly skilled martial artist and assassin by his father, alongside his sister Xialing, Shang-Chi left the Ten Rings for a normal life in San Francisco, only to be drawn back into the world he left behind when Wenwu seeks him out.

Zheng Zu, originally known as Fu Manchu, is a supervillain appearing in American comic books published by Marvel Comics. Based on Sax Rohmer's character of the same name, he is the leader of the Five Weapons Society criminal organization and the father and arch-enemy of Shang-Chi.