User blog comment:- Darkchylde/Acnologia's Element?/@comment-99.179.120.254-20150118090835

I think that as a human he was a soul dragon slayer because he could tear the dragons souls from the but when zeref turned him in to a dragon I think he some how incorporated ethernano into him because his roar is the same color of the ethernano from the tower of heaven arc now I want everyone to know this is only speculation and I am open to criticism or ideas to further my opinion