Finally fed up with Kazuya's 'weakness', Heihachi tossed his son down a deep ravine, claiming that if he were truly his son, he'd be able to survive the fall and climb back up. Jinpachi attempted to launch a coup to retake the Zaibatsu from his son, but failed and was ultimately imprisoned underneath Hon-Maru where he remained for 40-45 years. After assuming control, Heihachi began to steer the Zaibatsu into the military industry. Eventually, Heihachi betrayed Jinpachi and stole the Zaibatsu from him. Kazuya grew up a frail boy, dispite Heihachi's harsh parenting. During this time, Heihachi married Kazumi and eventually had a son with her named Kazuya Mishima. Heihachi Mishima was born as the heir to the rich, powerful, and well-respected Jinpachi Mishima, the owner of the powerful Mishima Zaibatsu and a world-famous martial arts master. Occasionally, he will reward people that he deems as extraordinary, such as when he adopted Lee Chaolan after witnessing the orphan fighting, and when he took in Jin Kazama and actually came to respect his determination to destroy Ogre. The only charity he will give or alliance he will accept is when it benefits himself.

He believes in complete self-reliance and in being the best in every endeavor. Blood relation means nothing to him, once he believes that you are a threat, he will eliminate you without any hesitation. His actions are cold-hearted and sometimes, they are inspirational (he has survived every attempt on his life thus far from pure willpower).

In general, Heihachi is not above betrayal, deceit, or committing small crimes in pursuit of what he perceives as a 'greater good'. Heihachi wears a blue gi with a tiger face at the back,white hair that is wing-like styled and also white mustache. After discovering that both Jin and Kazuya have begun to search for Pandora, Heihachi begins his own journey with his long-time friend, Kuma, to exterminate the two in order to reclaim the Mishima Zaibatsu. He is currently fighting his son Kazuya and his grandson Jin for control of the Mishima Zaibatsu. He is usually a callous and heartless individual, but from time to time shows a softer side. The man known as the King of Iron Fist, a formidable figure whose incredible strength betrays his age.

Heihachi tekken 5