User blog comment:IamJakuhoRaikoben/Chapter 364: Tartarus Arc, Part 1: Sins and Sinners, Review./@comment-5036235-20131220072132/@comment-7418318-20131220123151

Also Grim Reaper can barely be considered the same personality as Erigor. After losing his memory (I'm still not convinced he voluntarily did that, or at least didn't understand the extend of what it would do to him when agreeing), he didn't think for himself. He was more like an automaton who just followed orders like a robot until Wendy fixed him again.