Heihachi's adopted son and rival of Kazuya Mishima, Lee Chaolan.
Lee had entered the King of Iron Fist Tournament in disguise hoping to defeat Heihachi. He was quite surprised when his opponent turned out to be Kazuya Mishima, who was thought to be dead, and was defeated.
In the confusion surrounding the death of Heihachi, Lee was scheming to take over the Mishima Zaibatsu but was enraged when he learned that someone else had already beat him to it.
Lee, believing it was Kazuya who usurped the Mishima Zaibatsu, was vexed that Kazuya had once again stood in his way. A month later, the King of Iron Fist Tournament 5 was announced and Lee immediately decided to enter.
Lee was determined to settle the score with Kazuya in the tournament and claim the Mishima Zaibatsu.