All For One is a fictional character from the popular anime and manga series My Hero Academia. He is known as one of the main antagonists and possesses the ability to steal and use the quirks, or superpowers, of others. This makes him a formidable opponent, as he can accumulate various powers over time. The character is also the founder of the League of Villains, a group that opposes the heroes in the series. His ultimate goal is to create a world where he can dominate, using his powers to instill fear and control over society.