All For One (オール・フォー・ワン, Ōru Fō Wan?), surname Shigaraki (死し柄がら木き, Shigaraki?), is the overarching antagonist of the My Hero Academia manga and anime series. He is the founder and benefactor of the League of Villains. Once Japan's most powerful villain, and All Might's arch-nemesis, his full identity is unknown. His ultimate goal is to steal his younger brother's Quirk, One For All, the only Quirk that can oppose him. He is the mentor of Tomura Shigaraki.