User blog comment:FairyRaven/Fairy Tail Chapter 387: Tartarus Arc, Part 4: Father and Son, Review and Commentary/@comment-5268982-20140606181923/@comment-10525859-20140609202526

Maybe he was a demon who needed page wizard's hair or something to be created/reborn, so that might explain why he smells like Gray and know Natsu? It's a pretty stupid idea but yeah.