Toshinori Yagi, also known as All Might, is one of the main characters of My Hero Academia. He is the former No. 1 Pro Hero who bore the title of the world's Symbol of Peace.

All Might was the eighth holder of the One For All Quirk after receiving it from Nana Shimura. He has since passed the torch onto Izuku Midoriya, whom he trained to be his successor.

He taught Foundational Hero Studies at U.A. High School, and now serves as the school's vice principal eight years after the Final War.