Isolde, Queen of the Arctos

Isolde, one of the most powerful figures in history.
It is said she was Death's inspiration for the mass culling, and ascension, of the Arctos race via godscarring. During her rein she most notably, erased the god of preservation from the continent, and doubled the size of Death's kingdom.
However, the greatly diminished population of the Arctos was wittled to nothing over the course of The Great War, and the Arctos disappeared into history.
Today Isolde is synonymous with The Arctos, and demons looking to enoble their house commonly claim to be of Arctos lineage take the surname "Of Isolde". Many believe she still lives, deep in the darkest depths of The Catacombs, orchestrating the return of her race from extinction.