User blog comment:B214/Volume 22 spoilers/@comment-73.160.58.215-20160723140310/@comment-9595671-20160724010036

Is there any real life list for the names of the Demons that are part of the Extra Demons? I know the 72 Pillars are based on the Ars Goetia if I remember right, so I'd think the Extra Demons were decided in a similar way.