Heihachi Mishima is a central character in the Tekken video game series, known for his ruthless ambition and formidable fighting skills. As the head of the Mishima Zaibatsu, he plays a pivotal role in the ongoing family conflict that drives the series' story. Heihachi is notorious for his cold-blooded actions, particularly towards his son, Kazuya Mishima. His leadership and power-hungry nature have made him both a feared opponent and a major antagonist throughout Tekken's history.