User blog comment:LucidPigeons/Category Cleanup/@comment-2059440-20160301040046/@comment-1969141-20160305171947

Point taken. How about a category "Evil Spirits" that would include not only spiritual undeads but also spirit-demons like Dark Lich or the Shadow King, and any other spirits of whatever origin like Noah Kaiba who is a "ghost in the machine" so to speak?