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In Norse mythology [http://en.wikipedia.org/wiki/Fenrir Fenrir] (also known as Fenris) is a monstrous wolf and son of the trickster god [[Loki]] and the mother of monsters, the giantess [https://en.wikipedia.org/wiki/Angrboða Angrboða]. During Ragnarök it is foreseen by [[Odin]] that Fenrir will kill him, and that Fenrir himself will be slain by the god of vengeance Vidar. Because of these prophesies the Norse gods bound Fenrir in hopes of preventing their downfall.