All For One (???·???·?? Oru Fo Wan?), surname Shigaraki (??????? Shigaraki?), is the overarching antagonist of the My Hero Academia manga and anime series. He was the founder and benefactor of the League of Villains.Once Japan's most powerful villain, and All Might's arch-nemesis, his ultimate goal was to steal One For All, the Quirk that originally belonged to his younger twin brother, and the only Quirk that can oppose him. He was the mentor of Tomura Shigaraki, having spent the young villain's life shaping him into a successor, and a vessel for his power in a plan to eventually conquer the world as a self-proclaimed demon lord.He was imprisoned in Tartarus after his second defeat at All Might's hands until he escaped several months later, single-mindedly focused on destroying the ninth wielder of One For All, Izuku Midoriya, to complete his century-long plan.