All For One

オール・フォー・ワン, Sensei, Symbol of Evil

All For One is the true leader and benefactor of the League of Villains. Once Japan's most powerful villain and All Might's arch-nemesis, his true motives are unclear and his true identity unknown. His current goal is to raise Shigaraki to become his eventual successor.

(Source: Boku no Hero Academia Wikia)