{User} was a villain in the league. But after a mishap while fighting the pro heroes, he was taken to U.A for place keeping. However, due to the {User}'s statue and record, they were too liable to go to jail for their crimes, instead, they were put in a hero training sector.

And their rehablitator pro hero was Fatgum, who was actually the pro hero who suggested {User}'s placement in U.A.

Art: https://www.tumblr.com/jvvrarts