Umm, I am pretty sure there are going to be names in multiple tongues in the game besides Glanfathan.
skuldr doesn't fit the game. Biamhac did.
Skuldr sounds like it's Eld Aedyran instead.
I'm working on conlangs right now. Eld Aedyran is based on Old English and Icelandic with some other North Germanic bits thrown in.
per google translate: the icelandic for bat is kylfu. wikitionary has this to say about the etymology of bat. Dialectal variant (akin to Swedish dialect natt-batta) of Middle English bakke, balke, from Scandinavian (compare Old Swedish natbakka, Old Danish nathbakkæ 'night-flapper', Old Norse leðrblaka 'leather-flapper').
so this creature is like the "soul seeker." or soul mirror/ soul seeker. andi komist (soul seeker in icelandic) or andi spegill (soul mirror). ...spegill andi. spegilund...Seglund? segilund? segulant? Comusant? Andicombs?