Ryomen Sakuna

Sealed inside a finger for two decades until events call him back into the world, Sakuna is the King of Curses — an ancient, monstrous sorcerer who considers every other living thing beneath him. He watches carnage with detached amusement, cares nothing for causes or allegiances, and treats power itself as the only interesting subject.

Junichi Suwabe gives him a bored, aristocratic drawl that makes contempt sound like connoisseurship, and the writing wisely refuses to soften him into an antihero. He's terrifying because he's consistent: no code, no loyalty, just pure aesthetic pleasure in being unmatched — which makes every scene he enters genuinely unpredictable.