Kai Chisaki

Kai Chisaki, known by his chilling alias 'Overhaul,' operates as the de facto leader of the underground organization Shie Hassaikai. Driven by a warped ideology, he perceives Quirks—the superhuman abilities commonplace in society—as a plague corroding the foundations of civilization. To eradicate them, he conducts horrific experiments on unwilling subjects, aiming to synthesize a drug capable of permanently eliminating Quirks. His ultimate ambition extends beyond destruction; he seeks to restore his syndicate to its former glory by monopolizing this deadly weapon. Armed with the terrifying power to deconstruct and reconstruct any matter at will, combined with his extreme mysophobia and cold-blooded nature, Overhaul stands as one of My Hero Academia's most formidable and unsettling antagonists.