Which character is the alter ego of Kazuya Mishima representing his devil gene?

The character who serves as Kazuya Mishima’s devil-gene alter ego is Devil Kazuya. He is the demonic transformation of Kazuya, rather than a separate unrelated fighter such as Devil Jin or True Ogre.

Devil Kazuya first appeared as an alternate form in the original Tekken and became a distinct playable character in Tekken 2 and Tekken Tag Tournament. The form reflects Kazuya’s possession of the Devil Gene, a hereditary supernatural mutation connected to the Hachijo bloodline and the Mishima family’s larger conflict.

Kazuya differs from his son Jin because he generally embraces the power instead of rejecting it. Devil Kazuya is recognizable by his wings, horns, altered appearance and Devil Blaster, a powerful energy beam. In later games, the devil form is often integrated into Kazuya’s moveset rather than selected as a wholly separate character.

A common mix-up is Devil Jin, who is Jin Kazama’s corresponding transformation. Angel is a separate character associated with Kazuya’s story, while True Ogre is an alternate form of Ogre and has no role as Kazuya’s alter ego.