User blog comment:FairyRaven/Fairy Tail Chapter 429 & 430: Code Blue & Purification Ritual, Review and Commentary/@comment-66.87.117.44-20150420122315

As a Gray fan, I'm so happy that Gray was undercover. Unless he was being controlled, It made no sense for Gray to become obsessed with revenge. He learned the consequences of being consumed by revenge after what happened with his teacher so it would have been major character regression. Second, even though he has a lower amount of corny speeches Gray cares about his friends, just as much as Natsu so it wouldn't make any sense for him to turn against his friends. Gray still could have kept the new hairdo though.