Heihachi Mishima is a fictional character from the popular video game series Tekken, created by Bandai Namco Entertainment. He is known for his ruthless personality and complex backstory, often serving as a primary antagonist. Heihachi is the father of Kazuya Mishima and the grandfather of Jin Kazama, and his relationships with them are central to the series' narrative. Heihachi is characterized by his iconic gray hair, martial arts skills, and a strong desire for power. He leads the Mishima Zaibatsu, a powerful corporation, and is often depicted as a formidable fighter in the Tekken tournaments. His character has become a symbol of the franchise, appearing in multiple games and adaptations.