Hyodo Kazutaka is a major recurring character in the Kaiji series, where is serves as the overarching antagonist of it entirely. His first appeared in the climax of the Rock, Paper, Scissors game where he comments on Kaiji's unique abilities to survive. He also serves as the climax antagonist of the first series, and since then has been the primary nemesis of Kaiji. Hyodo is wealthy socialite and the president of the powerful financial consulting firm Teiai ( meaning "Love Emperor") Corporation, not to mention the owner and the sponsor of numerous underground gambling tournaments like those on board Espoir. He primarily hosts and sponsors countless underground projects. He is believed to be seventy years old and worth several hundred billion yen. Driven mad by wealth, conventional hobbies fail to entertain him, so he funds gambling tournaments to watch the destitute of society struggle against overwhelming terror and despair. He enjoys doing bizarre and often disturbing stunts, as forcing his employees to drink a plate of wine that he put his feet in, and often goes far enough to humiliate anyone to get a laugh out of it.
He meets Kaiji in the final segment of the first series of the manga, where Kaiji is selected by lottery to compete in the "Castle of Despair". Hyōdō's talents for winning in anything and everything have earned him the title of "king" by some, though others merely call him "very lucky". His first full manga appearance was in volume 8 - prior to that, all readers saw of Hyōdō was his finger tapping.
He won in the first series against Kaiji, which resulted in Kaiji losing all the fingers on his left hand.