Who is the Bye Bye Man in the collection, The Bye Bye Man?

It is unclear what exactly the Bye-Bye Man is - a spirit? A demon? Something in-between? His story is very similar to an urban legend in that much of it is murky and varies depending on who is telling the story, however he is most commonly described as being blind and is thought to suffer from Albinism. He originates from Algiers, a part of New Orleans.