User blog comment:IamJakuhoRaikoben/Chapter 452: The Prelude to the Final Battle, Review./@comment-5036235-20150914084328/@comment-24546844-20150914163909

In truth, Warui Hito literally means bad person. The twist here is (if the information yu gace is riht) that Hiro wrote it Waru Ihito as a pun, and as he wrote it in Katakana instead of Hiragana or kanji his name is to be taken as that. Mangapanda translators just taken the liberty to translate the pun so that it would make sense to us.