A former guild member of YGGDRASIL's Ainz Ooal Gown appears with his own Guild, known as the Blue Citadel, outside the Great Wall of the Roble Holy Kingdom. His base is known as Hel's Citadel, originating from the very center of Niflheim. Not given the same liberties of the being hidden like the Great Tomb of Nazarick, Fenrir must keep himself composed as an aggressive aristocrat.