Li (Reign of the Stone Monkey)
Li was a Chinese boy who assisted the Tenth Doctor in defeating a stone monkey.
When he was a little boy, Li witnessed the arrival of the TARDIS and guided the Doctor to his grandfather Chan Chui. After Chan Chui revealed he wasn't fit enough to go after the stone monkey, Li decided to go along and help the Doctor. The Doctor and Li found themselves battling Chinese guards, then finally battling the legendary stone monkey. After the stone monkey was defeated, Li and the Doctor went their separate ways, leaving Li longing for another adventure. The adventure they shared stayed with Li for all his life, and he even told his grandchildren stories about the stone monkey and the Doctor. Over 70 years after the stone monkey encounter, Li and the Doctor reunited once again for the final time. (DWAM: Reign of the Stone Monkey)