Lin was one of the new characters introduced in The King of Fighters 2000 as a member of the Benimaru Team. He, along with the Flying Brigands subplot, was created without the entire staff's knowledge, leading to some developers being surprised by his team's ending. Although he is no longer an active member in KOF, his story and character have not been abandoned.
Lin is a member of the Hizoku clan of assassins and was Ron's good friend in the village. He was in charge of training the nine princes of Xi Du, the sons of Ron. He even trained Ron's illegitimate daughter, Xiao Lon. He eventually was appointed the Deva of his division.
When Ron betrayed and murdered many of the Hizoku, Lin joined forces with the three of the Four Devas, Luan, Chat and Sai. He was enticed by the agent Seth to enter the King of Fighters tournament in order to find their clan's missing leader. After learning that Ron had defected to NESTS, he tracks the activities of NESTS's renegades, K' and company, in hopes of finding his leader. He continues to search for Ron even after NESTS's destruction, presumably meaning to execute him. For an unexplained reason, he appears next to Ron in the Psycho Soldier Team's ending in The King of Fighters XI.
Lin is very serious and very loyal to the Hizoku.