Devil is one of the main antagonists/Bigger Bad in the Tekkenfighting game series. He made his debut in Tekken. He is the Devil Gene that lives in the bodies of Kazuya Mishima and Jin Kazama. Simply referred as 'The Devil' until the presence of Devil Jin, referring Kazuya's Devil form as Devil Kazuya, he actually originates from Kazumi Mishima, the wife of Heihachi Mishima.