Fenrirs
Fenrirs refers to the legendary monstrous wolf Fenrir in Norse mythology, and, in some modern usages, to multiple such wolves within the mythic tradition. Fenrir is the son of the trickster god Loki and the giant Angrboða, and is one of the principal figures in the myths surrounding Ragnarök. In the surviving sources, Fenrir is described as growing so large and powerful that the gods fear he will bring about great destruction.
To prevent the prophecy from coming true, the gods compel the dwarves to forge Gleipnir, a binding
In Ragnarök, Fenrir is prophesied to break the fetter and kill Odin, after which he is slain