QuirkQuirk Name: One for All
Quirk Type: Emitter
Transfered to him from Toshinori Yagi, Izuku's Quirk allows him to stockpile an enormous amount of raw power, allowing him to significantly enhance all of his physical abilities to a superhuman level. This results in unbelievable levels of strength, speed, agility, and durability.
Izuku can focus the stockpiled power into a single body part, or spread it across his entire body evenly, though, focusing the power in a single part puts greater strain on that part of his body. He is also able to control what percentage of his full power that he uses. He is currently able to handle 20% of his full power without breaking his bones.
The Quirk factors of the previous power holders have merged with the core of One For All and have drastically increased in strength since. This grants Izuku the ability to access and utilize the Quirks of the previous holders of One For All. The known Quirks within One For All are:
Blackwhip (黒鞭クロムチ Kuro Muchi?): The Quirk of the fifth user, Daigoro Banjo. This Quirk allows Izuku to generate tendrils of black energy from his arms that are good for grappling. It is useful for grabbing things from long distances, as well as increasing Izuku's mobility.
Float (浮遊 Fuyū?): The Quirk of the seventh user, Nana Shimura. This Quirk allows Izuku to suspend himself in mid-air. It is unknown if it gives Izuku full mobility while levitating. At the moment, he hasn't manifested it yet.
Izuku has also displayed a type of mental connection to the previous holders of One For All.