

The winner of the last tournament and new Mishima Zaibatsu owner was Lee's foster brother Kazuya, who gave Lee a job at the Mishima Zaibatsu. Lee Chaolan failed in winning the previous tournament, and was not successful in claiming the Mishima Zaibatsu. Lee entered The King of Iron Fist Tournament, in hopes of winning to and to claim the Mishima Zaibatsu. From childhood, he went through similar training to Kazuya (he was also raised to be the heir of the Mishima Zaibatsu, although while Heihachi personally taught Kazuya how to fight, he sent Lee to America, where he trained with Marshall Law and Paul Phoenix), and their combat skills can be considered equal, although those who know of his power refer to him as "Silver-haired Demon". Lee Chaolan is the adopted son of Heihachi Mishima, who adopted Lee to be the rival of Heihachi's biological son Kazuya Mishima. Their combat skill is equal, but those who know Lee's power fear the "Silver-Haired Demon".

Heihachi never actually felt any emotion towards Lee the real purpose was to give Kazuya a rival to inspire him to shape up. Heihachi then took Lee Chaolan back to Japan to be educated. Impressed by Lee's street-fighting skill, Heihachi decided to adopt Lee. It was these qualities that caught the eye of Heihachi, who witnessed Lee fighting off several other kids while on a business trip. Facing a hostile environment each day, he quickly became a skilled scrapper with reflexes that were amazing for a boy of his age. Lee's parents died when he was a young child, leaving him to fend for himself on the streets. Lee Chaolan was introduced in the original Tekken and returned for every subsequent game, except Tekken 3.
