Devil Jin

Devil Jin (デビル仁 Debiru Jin) was first introduced in Tekken 5 and has returned for every subsequent game. Though Devil Jin made his first playable appearance in Tekken 5, he made his first non-playable appearance in Tekken 3 in Jin's ending. Devil Jin is Jin Kazama consumed by the Devil Gene, passed on to him by his father. According to Devil Jin's Tekken 5 prologue, Jinpachi Mishima, escaping captivity when Hon-Maru fell, triggered the evil that had been building up inside Jin.

His appearance is very similar to that of his human form with added inhuman traits including horns, wings, tattoos, a bone like horns protruding from his forearms, and light yellow irises. Many of Devil Jin's outfits have him wearing generally black pants, with his right leg having a flame graphic on it, covering up to his mid-thigh section. Devil Jin wears gauntlets coloured the same as the flame on his pants and shoes coloured the same the respective leg.

Although Devil Jin made repeated cameos and hints during Tekken 3 and Tekken Tag Tournament, his very first full appearance would occur in Tekken 4. Jin had received a portion of the Devil Gene from his father during the events between Tekken 2 and 3, resulting in his trademark tattoo. As Kazuya was reintroduced into the series, he would give more backstory to Devil Jin's origin. Kazuya notes that when he was revived by G-Corporation, part of the Devil Gene was forced out of his body because of his death at the hands of Heihachi, the gene would eventually find Jin Kazama, still a fetus within Jun Kazama, but was defeated by her, yet was inevitably able to enter Jin after Jun's disappearance.

Devil Jin's official debut occurred with Tekken 5, where he not only acted as the game's penultimate boss in the arcade run but also featured the return of Jin's forgotten Mishima Style Karate.

As Jin does not have as much control over the Devil Gene as his father or grandmother, Devil Jin's presence is often due to an involuntary transformation. It can be assumed that should Jin reach an extreme emotional state, or be severely wounded or defeated, he will transform into Devil Jin, and will typically be unconscious of actions done in this state. Having been utterly consumed, Devil Jin's main purpose is to absorb energies belonging to great beings such as Azazel and Jinpachi. Despite the Devil Gene being seemingly in full control of Jin's actions, one notable point is that there are two things that will cause severe trauma to Devil Jin. The first is the presence of the Kazama's purification powers. Devil Jin's dialogue with Asuka, as well as his win pose with Jun seem to hint that their purifying powers are hampering with the Devil Gene's control. The second are people who Jin believes are important. As such, despite not having any purifying powers, both Hwoarang and Xiaoyu can cause extreme pain to Devil Jin as shown in the Scenario Campaign.

As of yet, Devil Jin's only "match" was against Hwoarang, after the latter had seemingly defeated Jin. It is currently unknown if Devil Jin will make more canonical appearances in Tekken's story, as Jin progressively shows more control over the Devil Gene.