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The King of Iron Fist Tournament 6
Tekken 6 Storyline
Heihachi was knocked unconscious when the JACK military unit he was fighting self-destructed. When he came to, The King of Iron Fist Tournament 5 was already over. He went home, without any knowledge of the events that occurred at the tournament, where he was ambushed by the Tekken Force.

Afterward, the Mishima Zaibatsu announced The King of Iron Fist Tournament 6. Heihachi was furious when he heard that Jin had taken control of the Zaibatsu, and he left for the tournament to reclaim control of the Mishima Zaibatsu.
Unstoppable King of Iron Fist
Street Fighter X Tekken Storyline
The man known as the King of Iron Fist, a formidable figure whose incredible strength betrays his age. He is usually a callous and heartless individual, but from time to time shows a softer side. He is currently fighting his son Kazuya and his grandson Jin for control of the Mishima Zaibatsu. After discovering that both Jin and Kazuya have begun to search for Pandora, Heihachi begins his own journey to exterminate the two in order to reclaim the Mishima Zaibatsu.
ZAIBATSU MASTERMIND
PlayStation All-Stars Battle Royale Storyline
Heihachi is the head of the Mishima Zaibatsu and responsible for the King of Iron Fist Tournament, attended only by the strongest fighters around the world. A master of Mishima Style Fighting Karate, Heihachi seems to be able to rejuvenate himself, displaying a remarkable agility and strength which defies his true age. His pet bear, Kuma, joins him in battle, adding to the already formidable challenge he presents opponents.
"You fool! I am invincible!"
Tekken 7 Storyline
The original leader of the Mishima Zaibatsu, and the fighter known as the "King of the Iron Fist."

Heihachi continues to fight for control of the Mishima Zaibatsu against his son, Kazuya, and his grandson, Jin.

After having recovered from the injuries he sustained in the suicide attack on him from the G Corporation's Jack units, Heihachi is back with an iron fist--and body to match.
Heihachi Mishima
Killed
Kazumi Mishima
Victim
Kazumi Mishima
Companion
Heihachi Mishima
Companion
Resurrected King of Iron Fist
Tekken 8 Storyline
Heihachi Mishima rightly earned his moniker the "King of the Iron Fist" after founding the Mishima Zaibatsu with its formidable private army and being feared worldwide for his countless acts of tyranny.

Heihachi waged a brutal war that divided the world in two with G Corp—led by his son who bore the devil gene, Kazuya Mishima.

At its culmination, Heihachi was defeated by Kazuya and thrown into a river of lava, leading the world to believe that he was truly dead...
The King of Iron Fist Tournament 5
.hack//Versus Storyline
Heihachi Mishima.
The head of the Mishima Zaibatsu and the sponsor of The King of Iron Fist Tournament 4.

A squadron of JACKs cornered Heihachi after his loss to Jin Kazama in Honmaru.

At first, Heihachi and Kazuya fought the JACKs together. But Kazuya fled, leaving Heihachi to battle the JACKs alone.

The fight would have killed an ordinary human. But Heihachi, no ordinary man, held off the JACKs and survived the ambush.

One month later, he learns someone has taken control of Mishima Zaibatsu and opened The King of Iron Fist Tournament 5.
Heihachi prepares to fight again.

"I don't know who's behind this, but the Mishima Zaibatsu is mine!" says Heihachi.
The King of Iron Fist Tournament 2
.hack//Versus Storyline
Beaten by Kazuya in the previous tournament, in an instant he lost both his fame and family. Having spent his previous time indulging in deviant acts instead of training, he vows to regain all he has lost.
The King of Iron Fist Tournament 4
.hack//Versus Storyline
Two years ago, Heihachi failed to capture Ogre, but his researchers succeeded in collecting samples of its blood and tissue. These in turn were used in an attempt to create a new life form by combining Heihachi's and Ogre's genetic material.

The experiment failed, however, and Heihachi learned that he lacked the Devil Gene necessary to integrate Ogre's genome with his own.

In order to obtain the Devil Gene, Heihachi searched for Jin, who had transformed into a devil during the last Tournament.

During his search, Heihachi learned that the body of his son, Kazuya--whom he killed 20 years ago--was stored at a cutting-edge biotech firm called G Corporation.

Heihachi ordered his Tekken Force to raid G Corporation in an attempt to obtain Kazuya's remains. However, the mission ended in failure when Kazuya, revived by G Corporation, retaliated.

In order to create a new life form, Heihachi needed the body of Kazuya or Jin, both of whom carried the Devil Gene.

After much deliberation, an evil smile spread across Heihachi's lips. The next day, The King of Iron Fist Tournament 4 was announced.
The King of Iron Fist Tournament 3
.hack//Versus Storyline
Heihachi retrieved the Mishima Financial Empire by defeating his son.

Scheming to further develop the MFE, Heihachi organized "Tekken Force", the MFE's private corps and dispatched them to settle disputes and brought waste land under cultivation to feed the poor countries of the world to gain support of leaders worldwide.

Fifteen years later, a secret excavation by the Tekken Forces in Central American ruins unearths an unusual find. They were annihilated by a mysterious being.

Heihachi realized that the mysterious being could be the legendary God of Fighting, and took action to realize his life's goal, to capture the God of Fighting and therefore rule the world.

One day, Heihachi was visited by a 15-year-old boy named Jin Kazama. Being informed that Jin was his grandson and hearing what had happened to his mother Jun, Heihachi reasoned that the God of Fighting thrives on the "strong souls" of others. Heihachi trained Jin to use him as a decoy to lure the God of Fighting

In Jin's nineteenth year Heihachi declared to the world that the third 'King of the Iron Fist Tournament' was forthcoming. At the same time he noticed that Jin, the youngest of Mishima bloodline, began to show the same "dangerous power" as Kazuya had. Heihachi decided to dispose of Jin after he lured the God of Fighting in order to end the doomed destiny of the MFE.
Soul Calibur 2
.hack//Versus Storyline
After completing his mountain training with Kuma, Heihachi stopped by at a hot springs resort to recuperate. There he encountered an ancient metallic fragment. According to old picture scrolls, this shard was a piece of Soul Edge, a notorious sword from medieval Europe. Heihachi grabbed the fragment in excitement and accidentally cut his fingertip.

After a moment of dizziness passed, Heihachi looked around at his surroundings. A feeling of uneasiness washed over him. He was no longer at the resort he had been at just a few moments ago. Heihachi was stunned, but nevertheless remained collected.

After he wandered around for a while, he came to the conclusion that he was no longer in modern-day Japan. He had somehow traveled back to ancient times. Apparently, he was in the later half of the 16th century.

Regardless of the situation, Heihachi had to find a way to return to his time.

There was a part of him, however, that was trembling with anticipation of what was about to transpire. He knew the history behind the fragment, which was rife with battles between warriors fighting for its possession. Now, he was right in the midst of it all.

What better way to test his strength than a warring era ruled by power? A fighter could not ask for a better challenge!
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