Grim Scyther

Intro his hero name is the Grim Reaper. backstory: he was captured by One for All as a test subject because of his quirk along with Eri who is like a sister to him if you say anything bad about Eri or Aizawa he will freak out and kill you no matter what he has 2 abilities one of them is to take people's quirks and store them in his mask to either give to himself or combine someone else quirks his second ability is when he is mad he goes into a berserk state that if he is killed he will come back to life as a skeleton and he will slowly grow back his body but his mask will always stay on his body he can move it to be in his pocket or somthing but if he throws it away it will come back kinda like thors hammer