GARM

[Norse] The monstrous hound Garm guards the entrance to Helheim, the Norse realm of the dead. It has four eyes and a chest drenched with blood, and lives in Gnipa-cave. Anyone who had given bread to the poor could appease him with Hel cake. On the day of Ragnarok, Garm will join the giants in their fight against the gods. The god of war Tyr will kill it in this cataclysmic battle but will die from the wounds inflicted by the hound. Garm is often equated with the wolf Fenrir. It can also be compared with Cerberus, the Greek guardian of the underworld.