Toshinori Yagi, more commonly known as All Might, is the overarching protagonist of the My Hero Academia franchise, and also the overarching protagonist of its spin-off My Hero Academia: Vigilantes.

The former No. 1 Hero and the eighth user of the One For All Quirk, he teaches Foundational Hero Studies at U.A. After fighting against All For One where he used up the leftover embers of One For All completely to defeat All For One, All Might retired from crime fighting, and thus, ending his era. He was replaced by his rival, Endeavor as his successor as the No. 1 Hero.