What if during one of the times Izuku was being beaten by his bullies/tormentors he was killed?
What if he was reborn on the world of Mobius as a Mobian hedgehog?
What if he had the same chaos powers as Sonic, Shadow, and Silver?
What if he was alone until someone found him and took him in?
What if he was mute and had no memories of his past life, no longer burdened by the pain of his old world?