Most Helpful Guy
Which super hero - as opposed to which superpower? If I read it right, I would be the Phantom Stranger. No on knows where he came from, what his real name is. He can see ghosts that no other man can see, he appears in places where it is impossible for him to be and has other supernatural powers. He is totally enigmatic.
He was not DC's most famous comic super hero, but I thought he was really cool when I was growing up.