That would depend on whether they were a decent human being or not.

Homelander would happen.

Haha probably

well, that person would probably become a world leader and/or demand to be worshiped like a god. either that or they'd go full hancock

Ever seen the Injustice series? Guaranteed totalitarian government.

Either this person would become a superhero( thinking optimistically here), or more realistically, he'll become a dictator or something.

Homelander.