User blog comment:IamJakuhoRaikoben/Chapter 381: Where Demons Live, Review./@comment-3424593-20140418172109/@comment-4829046-20140418185108

Nick pretty much stated the facts really. Elfman didn't transform but absorbed the monster when we first saw the Lisanna death flashback. Though granted, Mashima originally never meant for it to actually be like this. You could tell from the extremely sloppy introduction of it in the Macao arc. I still don't understand what happened to all the vulcans.