While Jin came out victorious, Heihachi immediately ordered Tekken Force, the Mishima Zaibatsu's private paramilitary squad, to murder him, with Heihachi delivering what would be the killing shot, were it not for the Devil Gene within Jin awakening in the nick of time and saving him from certain death. Heihachi would later return and retake control of his corporation by defeating Kazuya in the next King of Iron Fist tournament and dropping him to his death into a volcano it was around this time that he discovered that his son had been saved by the Devil Gene, and he now seeks this in order to attain ultimate power, going so far as to manipulate his grandson, Jin Kazama, who also bears the Devil Gene, into entering a new King of Iron Fist tournament 19 years after the last one in order to obtain the power of an ancient battling deity known as Ogre, whom Jin wanted to defeat to avenge the supposed death of his mother, Jun Kazama. Kazuya defeated him, threw him off the same cliff, and assumed control of the Zaibatsu, continuing his father's criminal practices. Years later, when Heihachi hosted a martial arts tournament called the King of the Iron Fist, Kazuya returned in order to exact revenge on his father.

He soon bore a son, Kazuya Mishima, but found him to be weak and threw him off of a cliff in order to test his strength and to see if he had the Devil Gene when he was five years old. Heihachi overthrew and murdered his father Jinpachi Mishima in order to take control of his company and begin a criminal empire. He was born to Jinpachi Mishima, a renowned martial artist and the founder of the Mishima Zaibatsu corporation. Heihachi Mishima is a major antagonist/protagonist in the Tekken series of fighting video games, and the archenemy of his son Kazuya Mishima.

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