A massive, ogre-like man best known for mastering Rakan Niō Ken, an ancient Indian martial art—though he's also called the embodiment of Satan, which tells you something about his reputation. He was convicted of killing 700 people in a single use of his signature fighting style, which is exactly as brutal as it sounds.
What makes him genuinely remarkable (in the most disturbing way) is that he survived thirteen separate executions. Eventually the authorities gave up trying to kill him and just locked him away in Villainy Prison instead, where he's serving either a 200-year sentence or 500 years depending on which version you're following. Fans often note that his sheer indestructibility is part of what makes him such an intimidating presence—he's basically a force of nature they can't actually stop.
Content compiled by AnimeList.moe from publicly available sources.
