Today for spooky season I wanted to write about Níđhöggr, a Heathen dragon who lives in Nástrǫnd.
Níđhöggr gnaws at the roots of Yggdrasil. He also will chew on the inhabitants of Nástrǫnd, the part of Helheim reserved for murderers, adulterers, and oath-brackers.
Sources:https://en.wikipedia.org/wiki/N%C3%AD%C3%B0h%C3%B6ggr?wprov=sfla1
Ganymedes' guide. 