Lee Chaolan was introduced in the original Tekken and returned for every subsequent game, except Tekken 3.
Lee's parents died when he was a young child, leaving him to fend for himself on the streets. Facing a hostile environment each day, he quickly became a skilled scrapper with reflexes that were amazing for a boy of his age. It was these qualities that caught the eye of Heihachi, who witnessed Lee fighting off several other kids while on a business trip. Impressed by Lee's street-fighting skill, Heihachi decided to adopt Lee. Heihachi then took Lee Chaolan back to Japan to be educated.
Heihachi never actually felt any emotion towards Lee; the real purpose was to give Kazuya a rival to inspire him to shape up. Their combat skill is equal, but those who know Lee's power fear the "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. 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 entered The King of Iron Fist Tournament, in hopes of winning to and to claim the Mishima Zaibatsu.
Lee Chaolan failed in winning the previous tournament, and was not successful in claiming the Mishima Zaibatsu. 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's duties included being the head of Kazuya's personal bodyguards and to supervise Dr. Boskonovitch's project of creating the ultimate military animal for Kazuya.
Despite these important roles in the company, Lee was still considered Kazuya's "secretary", and with the announcement of The King of Iron Fist Tournament 2, Lee once again saw his chance to claim the Mishima Zaibatsu, and entered the tournament.
In Lee's non-canonical Tekken 2 ending cinematic, we see Lee sitting behind his desk (with a blimp flying outside in the background with his name on it). We then see Kazuya and Heihachi, Lee's adoptive brother and father, behind bars, presumably captured. Lee then gives a thumbs down gesture, then turns his thumb horizontal and quickly moves it from one side of his throat to the other, presumably signifying that the two will be killed.
Tekken Tag Tournament
Lee Chaolan is featured as a playable character in Tekken Tag Tournament, a non-canonical Tekken game.
After Lee betrayed Heihachi and worked for Kazuya after Kazuya won the first tournament, Lee was fired from the Mishima Zaibatsu. Thoughts of revenge were constantly on Lee's mind for quite some time, but eventually he realized that it was pointless to kill an old man who Lee assumed only had a few years of life left at best. After this realization, Lee distanced himself from fighting and lived a more solitary life. However, one day he discovered a huge sell-off of G Corporation's stock online and Lee's intuition told him that something had happened within the company. His intuition would prove to be correct, as he learned that the Mishima Zaibatsu raided G Corporation and caused significant damage to their research facilities.
He also came across information that a new life for was under development by the Mishima Zaibatsu and would be completed by next year. However, it appeared that in order to create the life form they were missing a integral component. Oddly enough, an announcement was made for The King of Iron Fist Tournament 4 around the same time Lee discovered this information. Immediately, Lee's passion for fighting was rekindled, along with his resentment towards the Mishima family.
Lee signed up for the tournament under a false name, Violet, in order to prevent the Mishima Zaibatsu from discovering his true identity (he also dyed his silver hair purple and wore new clothes and a pair of sunglasses).
In Lee's Tekken 4 ending video, a woman walks into Lee's office and tells him that the new prototype model of Combot (a robot that Lee had created, essentially Tekken 4's Mokujin) was completed. Lee says that this new one better work perfectly, and the woman goes on to say that combat experiments were conducted on Heihachi Mishima and that "10.23 seconds into the experiment, combat unleashed a 50 hit combination...Heihachi was completely helpless". Lee chuckles and says "excellent", as the video ends with Lee smiling, somewhat reminiscent of his Tekken 2 ending.
Lee entered The King of Iron Fist Tournament 4 in disguise, hoping to defeat Heihachi Mishima. He was surprised to find his opponent to be his brother, Kazuya Mishima, who Lee thought was killed by Heihachi about 20 years ago. Due to his surprise, Lee could not focus and was defeated. After he learned that Heihachi had died in the Hon-Maru explosion, Lee had plans of taking over the Mishima Zaibatsu, but was infuriated when he learned that someone had beaten him to it.
Believing it was Kazuya who had taken control of the Mishima Zaibatsu, was frustrated that Kazuya stood in his way once again. One month later, The King of Iron Fist Tournament 4 was announced, and Lee immediately decided to enter, determined to settle the score with Kazuya and claim the Mishima Zaibatsu once and for all.
In Lee's non-canonical Tekken 5 ending cinematic, Lee is lying on a pool side chair, relaxing. Lee snaps his fingers and Heihachi, wearing a bathing suit hurries towards Lee, and asks if he can be of any service. Lee requests a drink, and as Heihachi walks off to carry out Lee's request, he mutters "Damn that bastard". Lee, apparently hearing this, says "You should hurry...if you don't want to die", as he picks up a remote device and presses the button on it. Many beeps come out of the bow-tie Heihachi is wearing, and he begins to panic as thoughts of the Hon-Maru explosion are shown, and Heihachi runs off saying "right away sir!", as Lee puts the device back down and chuckles.
Lee Chaolan entered The King of Iron Fist Tournament 5 assuming Kazuya Mishima had taken control of the Mishima Zaibatsu, as he hoped to defeat Kazuya and claim the Zaibatsu for himself. However, it was Kazuya's grandfather, Jinpachi Mishima, who had taken over control of the Zaibatsu. After learning this, Lee lost interest in the tournament and returned to his home in the Bahamas. Not long afterward, the Mishima Zaibatsu, led by Jin Kazama, brought the world to chaos, with G Corporation being its only major opposition. Surprised by G Corporations sudden military action, Lee, who was a major shareholder, conducted a private investigation in secrecy and discovered that it was Kazuya who was behind all of G Corporation's military action.
Ending: Lee is preparing to play what seemed to be a normal game of golf....until it's revealed that Heihachi, Kazuya and Jin were strapped to what looked like rockets on the other side of the field. Lee swings the first ball which only lands some distance from the three captive men. Heihachi laughs, gloating "You (Lee) missed!", only for the golf ball to explode, sending dust up the latter's face.
As a result, the first coil of rope comes loose on all three rockets while Lee himself prepares a golf ball with a bomb symbol on it. A swing later, the bomb ball explodes near the rockets, sending them (Heihachi, Kazuya and Jin respectively) sky-high and exploding as fireworks against the blue sky. A woman joyfully exclaims "Nice shot!" whilst clapping. Lee himself chuckles before the camera zooms in on to his face as he takes off his sunglasses and smiles directly at the camera, saying his famous catchphrase "Excellent".After the announcement of The King of Iron Fist Tournament 6, Lee learned that Kazuya would be participating and decided to enter the tournament in order to even his score with Kazuya.
- In his Tekken 4, 5, 6, and his Scenario Campaign endings, Lee says "Excellent!" in the final parts.
- He often wears a Unicorn on his clothing, an animal known as a symbol of purity, elegance, and charm. It's also known for courage and strength.
- He seems to possess a company called Violet Systems, as shown in Tekken 6.
- He did not appear in Tekken 3. With Ogre utilising Lee's Infinity Kick move, many thought he had been attacked by Ogre.