Lee returns in "Tekken 4" as a playboy whose robotics operation is a success. Upon learning that the Zaibatsu's rival G Corporation was attacked by the Tekken Force, Lee joins the fourth tournament after changing his appearance and calling himself Violet in order to conceal his identity, while hoping to test his new "Combot" experiment in the process. However, he is defeated early by Kazuya, whom Lee had believed to be dead, but he then learns someone else had controlled the Zaibatsu in Heihachi's absence. Believing it to be Kazuya, Lee enters the fifth tournament in "Tekken 5" to take him out personally and regain control of the Zaibatsu, but upon learning that the culprit is Heihachi's father Jinpachi, he drops out of the tournament and returns to his business. After Kazuya legitimately takes control of the company, Lee enters the next tournament in attempt again to come in contact with Kazuya. In the game's "Scenario Campaign" story mode, Lee joins forces with Julia Chang, Lars Alexandersson, and Dr. Bosconovitch's android daughter Alisa, due to their shared objective of stopping Kazuya and Jin, but Lee and Lars are not aware at first that Alisa was created to serve Jin, thus acting as a mole for Lars. When Alisa is destroyed at the climax, Lee promises Lars that she will be reconstructed with his company's resources, which he finally succeeded at the same time of Heihachi's return in the seventh tournament.