Due to reasons you gained super powers in a world without super powers so you became a Super Hero. Some don’t like you and some do and the government is trying to find out who you are so they can do things but you wear something to cover your identity. However for some reason Super Villains keep appearing

(Chose backstory, Power [can be multiple], Costume, Gender, Age, Hero Name and other things like example only spoken language or what country you live in and the year so can be past/future)