I recently read The Power by Frank M Robinson.
It reminded me of a novel that I think was published in the 1930s.
In that novel the superman has powers similar to the one in Robinson’s book but has taken over a city.
He mentally enslaves anyone he comes in contact with and, among other things, is a one-man stud farm. He allows his children who have his power to live and kills the others.
I think even J. Edgar Hoover is hypnotized by him, but a couple of FBI agents who still have free will try to kill him.