In Norse mythology, a giant monstrous wolf foretold to break free and bring about the end of the world during Ragnarok.
From Old Norse Fenrir, likely related to Old Norse 'fen' (bog/swamp) and 'reyrir' (runner), suggesting 'the one from the bog' or 'the boggy runner.' The etymology emphasizes the creature's wild, dangerous nature.
Fenrir represents one of humanity's oldest primal fears—the unstoppable predator—and Norse mythology imagined it bound by magical chains as a brilliant metaphor for containing chaos. When Fenrir finally breaks free at Ragnarok, it's not just a battle but the dissolution of order itself, which is why every ancient culture created their own version of this apocalyptic beast.
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