User blog comment:HarryS18/ENDs Power/@comment-26926686-20150915225351

Considering the fact that E.N.D. is Natsu, we're all forgetting that he is a Fire Dragon Slayer. If E.N.D. is as powerful as he was in the past, then his previous power combined with his Fire Dragon Slayer powers, he could actually defeat Acnologia, even Zeref. I don't know all of the details, but Acnologia avoided the question when Igneel asked him about E.N.D., so he could possibly be afraid of him, or at least feel threatened by him. Besides, Natsu is growing more and more powerful with each fight, but then there's the possibility that he could become evil. There's too many possibilities about E.N.D. and the final battle.