Kazuya Mishima (Japanese: 三島 一八, Hepburn: Mishima Kazuya) is a fictional character in Bandai Namco's Tekken fighting game series, first featured as the protagonist in the original 1994 game and later became one of the major antagonists and antihero of the series. The son of worldwide conglomerate Mishima Zaibatsu CEO Heihachi Mishima, Kazuya seeks revenge against his father for throwing him down a cliff years earlier. Kazuya becomes corrupted in later games, seeking to obtain more power and later eventually comes into conflict with his son Jin Kazama. Kazuya Mishima possesses the Devil Gene, a demonic mutation he inherited from his late mother, Kazumi Mishima, which can transform him into a demonic version of himself known as Devil Kazuya (デビル一八, Debiru Kazuya). Devil Kazuya has often appeared as a separate character in previous installments (excluding Tekken (1994)) prior to becoming part of Kazuya's moveset in Tekken Tag Tournament 2 and later games. Kazuya Mishima is also present in related series media and other games.