All For One

All For One surname 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 little brother's Quirk, One For All, the only Quirk that can oppose him, shaping Tomura Shigaraki into the perfect vessel, 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 several months later, now single-mindedly focused on destroying the ninth wielder of One For All, Izuku Midoriya, to complete his centuries-long plan. All For One is Japan's most powerful villain. Thanks to the Life Force Quirk, All For One is virtually immortal, and has been active since the emergence of Quirks. He has collected numerous Quirks with an extensive range of applications and can combine them as he pleases.


 

This, along with his ability to steal any Quirk from his opponent makes All For One nigh impossible to defeat. The villain will employ any means necessary to hurt his opponent before killing them. Even in his prime, All For One easily defeated powerful Pro Heroes, making himself appear unequaled and unstoppable. The only individuals that can effectively oppose the Symbol of Evil are the inheritors of One For All, a Quirk All For One himself inadvertently created, and the only Quirk he can't steal (though he tried to steal it from Daigoro Banjo and En, twice). All For One sought each One For All user (excluding Hikage Shinomori), and easily killed them by overwhelming them with his barrage of Quirks. However, All For One was unable to steal One For All, nor prevent any of the users from passing the Quirk. Nevertheless, All For One remained unchallenged until the rise of All Might. All Might possessed the necessary strength to challenge All For One, and the two opponents fought a bloody duel. Although All Might sustained crippling injuries, he succeeded in defeating All For One, forcing the villain to rely on life support system. All For One uses his ultimate combination of Quirk to clash with All Might one final time. Six years later, despite losing all his senses and unable to recover from his injuries, All For One was far from weak. He single handedly overpowered Endeavor, Best Jeanist, Edgeshot, Mt. Lady, and Gran Torino with little effort, as well as fight on par with All Might until the hero was exhausted out of his muscle form. With his ultimate Quirk combination, coupled with All Might's declining power, All For One nearly succeeded in killing All Might, but the latter summoned his willpower and used the last of his power to knock out the Symbol of Evil. All For One's Quirk allows him to steal other people's Quirks, leaving them Quirkless, and wield the Quirks as his own. All For One can also redistribute his stolen Quirks to other people. His multiple Quirks grant him a very wide variety of options in combat, and he can combine his stolen Quirks to create compound attacks with devastating effects. However, he cannot steal the original users' Quirk proficiency and is therefore limited by his own skill with his stolen powers. Because of this, he prefers to steal Quirks that rely on raw power, rather than ones that take practice and experience to master. While he can steal any Quirk, All For One's body cannot properly contain Quirks of newer generations, which is the reason why he sought Dr. Garaki's medical research. He also mentions having frequent nightmares where the consciousnesses of the people he stole Quirks from appear before him. Shortly before the Kamino Incident, his Quirk was duplicated by Doctor Garaki and the original version of it was given to Tomura, while All For One kept the copied version. A conscious vestige of All For One remains within the original Quirk and has the capabilities of overriding Tomura's will and control his body, though it is currently unaware how much of a connection the vestige and original All For One have to each other.