Jin Kazama is a fictional character and main protagonist of the Tekken series released by Namco Bandai Games. Jin is consistently voiced by Isshin Chiba since he debuted in Tekken 3, making him the only Tekken character to be consistently voiced by one actor in every appearance. Trained by his grandfather, Heihachi Mishima, in order to enter the King of Iron Fist Tournament, Jin wishes to avenge his mother's apparent death. However, during the tournament it is revealed that Jin possesses the Devil Gene, a genetic abnormality within his body, which causes the betrayal of Heihachi who wants to take it. He is also antagonized by his father, Kazuya Mishima, from whom he inherited the gene. While dealing with them, Jin loses control of the Devil Gene, which causes his transformation into an alter-ego named Devil Jin, first introduced as a non-playable character in Tekken 3 and playable in Tekken 5. Outside the video games, Jin has also appeared in the animated adaptations from the games as well as the live-action film.