izuku yagi was bullied through out his life why because he was quirkless well fake quirkless the doctor put him as quirkless in fear of what will happen to the boy if people find out about his quirk and izuku's life became hell because of that mistake and also to add insult to injury his family neglected him as if bullying wasn't enough and izuku well he had to become and Adult as a child and so jzuku also needed money so at the age of 13 he became an info broker he would sell info about hero'z for villains it's not until he got in an accident with a sludge villain that he almost awoke his quirk but what ig the same accident happens after all might told him he can't be a hero and filled izuku's heart with an unreachable level of hatred that he awoke his quirk and took the sludge villains quirk and with this new quirk he got the idea to be.................a villain.