User blog comment:CNBA3/Tartarus Arc Parts Theory!/@comment-201.160.219.228-20141013034219/@comment-99.120.149.4-20141013060919

Well, ever since I saw Acnologia nearly killing our heroes in the Tenrou Island Arc and got away, it left me "unsatisfied". I've been waiting for a long time for that evil black dragon to return. And now that he's returned in the Tartarus Arc, this nightmare will soon end, as I want to see him dead!

And also, Acnologia, to be killed by "E.N.D."? No, he won't steal Igneel's, and Natsu's, glory. Only heroes must destroy evil like Acnologia.