All For One, is the overarching antagonist of the My Hero Academia manga and anime series.
He is the former leader 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 true motive is to take his little brother’s Quirk, One For All, the only power that can oppose him. His current goal is to shape Tomura Shigaraki to become his new vessel, using his hatred to steal One For All for good and remake himself in greater power, before eventually conquering the rest of the world.
He was imprisoned in Tartarus after his second defeat at All Might’s hands, until he escaped, laying low waiting for his new body to heal.
After being mortally injured by All Might years ago, All For One’s face is entirely made up of scar tissue, extending from above his upper lip and covering his entire head and the back of his neck. As such, he has no visible nose, ears, hair or eyes, though the outlines of eye sockets are visible. All For One is blind, but “sees” by using an Infrared Quirk and by sensing the directions of vibrations in the area around him, similar to echolocation. There is a small hole in each palm of his hands, which is how he steals and transfers Quirks.