Bergsra are common enemies that can be encountered in Svartalfheim. There is a more-powerful counterpart called the Bergsra Mother, in which they can spawn in wretches.
Norse Mythology[]
The Bergsrå, known as Bergakungen (Mountain King), Bergatrollet (Mountain Troll), and in Scandinavian folklore as Mountain Rå, was a mythical creature that appeared in Norse Mythology, in which it could be masculine or feminine. It lived in the mountain with a court of relatives and sometimes surrounded by Trolls. There is a common phenomena in which the Bergsrå would trick people into their home in the mountain and become bergtagen (literary: "taken into the mountain").