What is the name of the CEO of the Mishima Zaibatsu in the first Tekken?

The CEO of the Mishima Zaibatsu in the first Tekken game is Heihachi Mishima. He is introduced as the tournament's organizer and a powerful martial artist who controls the military and business empire founded by his father, Jinpachi Mishima.

In the original Tekken, Heihachi announces the first King of Iron Fist Tournament and offers a huge cash prize plus control of the Mishima Zaibatsu to anyone capable of defeating him. His son, Kazuya Mishima, wins the tournament and takes control of the company after throwing Heihachi from a cliff.

The wording can cause confusion because ownership and leadership shift repeatedly throughout the series. Kazuya controls the Zaibatsu after the first game, Heihachi later regains it, and Jin Kazama eventually becomes its leader. Heihachi remains the canonical answer for the first Tekken because the game's opening premise presents him as the serving head and organizer of the Zaibatsu.