Fenrir is the great wolf of Norse mythology, the eldest child of Loki and the giantess Angrboða. Feared by gods and mortals alike, he grew so vast and so strong that the Æsir bound him with an unbreakable fetter — knowing all the while that at Ragnarök he would slip his chains and swallow the Allfather himself.
Who is Fenrir?
Fenrir, also called Fenrisúlfr ("Fenris-wolf"), is the most dangerous of the three monstrous children Loki fathered on Angrboða in Jötunheim. His siblings are the world-serpent Jörmungandr and Hel, the ruler of the dead. Where his brother encircles the sea and his sister rules the underworld, Fenrir embodies devouring, chaotic force — the untamed power that the ordered world of Asgard cannot contain.
The binding of Fenrir
The Æsir brought the wolf-cub to Asgard and raised him themselves, but the prophecies warned that he would be their undoing. As Fenrir swelled to terrible size, only Týr was brave enough to feed him. The gods resolved to bind him, framing each attempt as a test of strength. Fenrir burst the iron chain Leyding, then the far stronger Dromi, scattering their links.
At last the gods sent to the dwarves, who forged Gleipnir: a ribbon smooth as silk, wrought from six impossible things — the sound of a cat's footfall, the beard of a woman, the roots of a mountain, the sinews of a bear, the breath of a fish, and the spittle of a bird. Suspecting sorcery in so slight a band, Fenrir would submit only if a god laid a hand between his jaws as a pledge. Týr placed his right hand in the wolf's mouth. When the fetter held and Fenrir could not break loose, he bit the hand off at the wrist. The gods fixed the bound wolf to a great rock and jammed a sword upright in his jaws; the river Ván is said to flow from his slavering mouth.
Fenrir at Ragnarök
Fenrir's captivity is not eternal. When Ragnarök comes, he breaks his bonds and runs free, his lower jaw against the earth and his upper jaw against the sky, fire blazing from his eyes and nostrils. On the plain of Vígríðr he meets Odin and swallows the Allfather whole — the death the gods had foreseen and failed to prevent. Vengeance is swift: Odin's son Víðarr strides forward, sets his great shoe against the wolf's lower jaw, and rends Fenrir apart.
Symbols and legacy
Fenrir is the archetype of bound catastrophe — the doom that waiting cannot avert, only delay. His story carries the same energy as the rune Thurisaz, the thorn of raw and hostile force. In the Ironwood to the east, a wolf-brood of his line is said to be reared, among them Sköll and Hati, who hunt Sól and Máni across the heavens until, at the end of days, they finally seize them. From Marvel films to Norse-inspired games, Fenrir endures as one of the most recognizable monsters of the northern imagination.
Frequently asked questions
What is Fenrir in Norse mythology?
Fenrir is a monstrous wolf, the eldest child of Loki and the giantess Angrboða. Prophecy foretold that he would kill Odin at Ragnarök, so the gods bound him with the magical fetter Gleipnir.
Why did the gods bind Fenrir?
The gods learned from prophecy that Fenrir was destined to bring them ruin. As he grew larger and more fearsome by the day, they resolved to chain him before he could fulfil his fate.
How did Týr lose his hand?
Fenrir agreed to be bound by Gleipnir only if a god placed a hand in his mouth as a pledge of good faith. Týr alone dared. When the wolf found he could not break free, he bit off Týr's right hand.
Who kills Fenrir?
At Ragnarök Fenrir devours Odin, and Odin's son Víðarr avenges his father by tearing the wolf's jaws apart, killing him.
Are Sköll and Hati Fenrir's sons?
In many tellings the wolves Sköll and Hati, who chase the sun and moon across the sky, are counted among Fenrir's offspring, born in the Ironwood to the east.