Jin Kazama is a character of the Tekken fighting game series created by Bandai Namco Entertainment. Introduced as the protagonist in the 1997 game Tekken 3, he has been the central character of the series from that game onwards. Trained by his grandfather Heihachi Mishima, Jin wishes to avenge the apparent death of his mother Jun Kazama by Ogre. Meanwhile Heihachi betrays Jin to awaken a genetic abnormality within his body known as the Devil Gene .

Kazuya Mishima is a character in Bandai Namco's Tekken fighting game series, who first featured as the protagonist in the original 1994 game and later became one of the main villains of the series since becoming the penultimate antagonist of Tekken 2. He later returns as the main co-protagonist of Tekken 7, before assuming his role as the main antagonist again in Tekken 8. The son of worldwide conglomerate Mishima Zaibatsu CEO Heihachi Mishima, Kazuya seeks revenge against his father for throwing him off 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, which he inherited from his late mother, Kazumi Mishima, which can transform him into a demonic version of himself known as Devil Kazuya . Devil Kazuya has often appeared as a separate character in previous installments 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.