User blog comment:IamJakuhoRaikoben/Chapter 412: Dance Unto Ishgar, Review./@comment-24277053-20141208221538/@comment-9595671-20141209041913

I'm still curious about Wesslogia and Skiadrum

Also I heard someone say it could work in reverse, and Gray would become END. Considering what he did last chapter he seems more like a candidate, plus since Gray's a Devil Slayer if he got possessed they lose their best weapon against the strongest Demon.

Seems more fitting for someone who uses Demon slaying magic to be possessed and give Fairy Tail more trouble.