Li (Reign of the Stone Monkey)
Li was a Chinese boy who helped the Tenth Doctor defeat a stone monkey.
When he was a young boy, Li witnessed the arrival of the TARDIS and took the Doctor to his uncle, Chan Chiu. After Chan Chiu told the Doctor about the stone monkey, Li decided to help the Doctor by taking him to the temple in Qingyang where it resided. They encountered mind-controlled guards and then the stone monkey and its two associates, who were all aliens. The Doctor eventually trapped the aliens with the restraint ray of their own spaceship, and sent them back to their own planet to be arrested.
Li met the Doctor several more times over the course of his life, including on an evening where he had once again told his grandchildren the story of their first meeting. He was also made governor. (COMIC: Reign of the Stone Monkey)