User blog comment:FairyRaven/Fairy Tail Chapter 396: Air, Review and Commentary/@comment-24102956-20140812153024/@comment-24784846-20140812160015

Other Demon Gates have lived up to their title too:

Jackal: "Feline Bomber" are you telling me he didn't live up to that, because Natsu and Lucy are both strong

Ezel: "Child Slicer" well he lost to Wendy but she WAS in dragon force, that was a pretty fair fight so no complaining there

Keith: "Black Priest" he's a necromancer, he underestimated Juvia, not really great but he was sorta like a black priest,and evil and all about heresy and that qualifies

So Sayla, and Kyouka were just... that was not expanded on