izuku's mother, inko, was murdered.
he was taken to adoption, though knowing all the normal cooking and cleaning an adult would, he was taken in anyways. he escaped, and became a murderer. a villain, maybe. no, not quite. todoroki had grown worried, and had everyone, including bakugou searching.
he became known as 'alleyway child'. he wasn't confirmed of the gender. he wore black, black shirts, hoodies, jeans, even bannana, but kept his red sneakers.
the others gave up, knowing that they would no longer know it was izuku, because of the loss of his voice. but on a class trip, they encounter a child dressed in black, hoodie wrapped around it's waist, red cuts along it's arms, displayed like trophies, red sneakers, but most importantly, green hair, and a green bright light shining the the black bandana over it's eyes.
(book one in TODEKU series (All can be found on reading list MY TODEKU)