User blog comment:IamJakuhoRaikoben/Chapter 395: Tartarus Arc - Part 5: Extreme Pain, Review./@comment-4164634-20140801164441/@comment-7418318-20140802085003

It'd have to be someone they dislike... so maybe Gray. Even though I'd hate that happening, it would make sense for him to swoop in and show off his new magic :(

Alternatively maybe Cobra. He could certainly entertain us with a few sarcastic comments. ^^