Heihachi

The CEO of the Mishima Zaibatsu and the original host of the King of Iron Fist Tournaments, Heihachi is an old but incredibly muscular individual. After losing against his son in the first King of Iron Fist he had to step down from his position in his company. Filled with shame he went and lived in the mountains alongside Kuma. After hearing about a new King of Iron Fist Tournament, he came back and eventually won, killing his son Kazuya in the process.

After taking back his corporate empire, Heihachi expanded his reach all over the world. This would lead him to central America, where a mysterious being was found. Ogre. Soon after Heihachi learned of his grandson Jin, and understanding that the Ogre feeds on strong souls set about to train him to bait the Ogre into coming out. To do so, he called a new King of the Iron Fist Tournament.

Heihachi, after learning that he could not be combined with the Ogre's blood due to lacking Devil Genes. He decided to seek out both Jin and Kazuya. The G Corporation had gotten a hold of Kazuya's body since his passing. After learning of this, the Tekken forces, a paramilitary branch of the Mishima Zaibatsu, set about breaking into the corporation and retrieving it. They were faced with a revived and angry Kazuya. To bait Kazuya back into his domain, Heihachi establishes a new The King of Iron Fist Tournament.

Heihachi and Kazuya were ambushed soon after the end of the tournament by a group of Jack robots in Hon-Maru and barely managed to live. Kazuya filed before the climax of the fight. Heihachi was caught in a massive explosion but survived. After recovering he learned of a new King of Iron Fist Tournament that had occurred while he was unconscious.

After being stopped by the Tekken forces while trying to enter the Zaibatsu headquarters he comes to know that Jin has taken over the company. Soon after a new King of Iron Fist Tournament is announced and Heihachi is driven to compete and win back his empire.