Lo Pan is arrogant, domineering and ruthless. He is sided with the Shi, and can be first seen in San Francisco fighting the Dragon in a ring. He wants to control the streets of Chinatown by taking out Dragon.
If the Chosen One has killed Lo Pan in the fight, people in San Francisco will say "Lo Pan is dead!' which is a reference to Greek mythology when the god of nature was killed, just adding to the original phrase "Pan is dead," to "Lo Pan is dead".