Fenrir is the wolf who kills Odin. That single fact sits at the end of Norse mythology and casts a shadow back over everything before it.

What makes the story remarkable is not the monster. It is that the Norse told it in a way that leaves the gods looking considerably worse than the wolf does.

Where the story comes from

Fenrir appears in the two great collections of Norse material: the Poetic Edda, a compilation of older verse, and the Prose Edda written by the Icelander Snorri Sturluson in the thirteenth century.

Both were recorded after Iceland converted to Christianity, by writers looking back at a religion no longer practised. That matters when reading the moral shape of the story, because some of it may be Snorri's framing rather than the original.

His family, and the prophecy

Fenrir is the son of Loki and the giantess Angrboða. His siblings are as consequential as he is: Jörmungandr, the serpent that encircles the world, and Hel, who rules the dead.

Three children, and a prophecy attached to all of them. The gods learned that Loki's offspring would bring about their destruction.

They responded by dividing them. Jörmungandr was thrown into the sea. Hel was sent to the underworld and given dominion there. Fenrir, still a cub, they kept in Asgard where they could watch him.

Raised in Asgard, feared by everyone

Fenrir grew, and he grew faster than anything should. The gods watched him get larger and understood that the prophecy was arriving.

Only one of them would go near him. Týr, the god of war and of oaths, fed Fenrir. Nobody else was willing.

Remember that detail. The wolf's single relationship among the gods is with the one who shows him kindness, and it is the reason the rest of the story lands the way it does.

Three chains

The gods decided to bind him, and they went about it by deception rather than force.

They proposed it as a game. Here is a chain, they said. Let us see whether you are strong enough to break it. Fenrir, young and proud, agreed.

The first fetter was Leyding. He broke it on the first attempt.

The second was Drómi, twice as strong. He broke that too, though it took effort, and the gods began to be frightened.

So they sent to the dwarves for something that could not be broken, and the dwarves made Gleipnir.

Gleipnir, made of six things that do not exist

Gleipnir is the best invention in Norse mythology. It looks like a silk ribbon, and it is made from six impossible ingredients:

• 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
• The spittle of a bird

The myth explains that this is why none of those things exist any more: the dwarves used them up. It is a story about where absences come from, which is a strange and lovely thing to build a chain out of.

The logic is sound in its own terms. Something made of nothing cannot be broken by strength, however much of it you have.

The hand

Fenrir was not fooled. He looked at the ribbon, understood that something so slight would only be offered if it were more than it appeared, and refused.

Then he made a condition. He would allow the binding, but one of the gods had to place a hand in his jaws as surety. If it was a trick, the hand would pay for it.

Every god present understood what that meant, and every one of them declined. Except Týr, who had fed him, and who put his right hand between the wolf's teeth.

Gleipnir held. Fenrir struggled, could not break it, and understood that he had been deceived. He bit the hand off.

Týr knew he would lose it before he offered it. He offered it anyway, because the binding could not happen otherwise. That is why he is the god of oaths: he is the one who keeps a promise knowing exactly what it costs.

And Fenrir was not wrong either. He was deceived, by the only being who had ever been kind to him, and he took the price he had named in advance.

Bound, and waiting

The gods secured Gleipnir to a boulder driven deep into the earth, on the island of Lyngvi in the lake Ámsvartnir.

Fenrir howled and snapped, so they jammed a sword upright in his jaws, hilt in the lower and point in the upper, to hold his mouth open. Foam and drool ran from him and formed a river called Ván, which means expectation.

A river named for waiting, running from a bound animal, for as long as the world lasts. The Norse did not do subtle, but they did do precise.

Ragnarok

At the end, the bindings fail.

Fenrir breaks free and runs, jaws gaping so wide that his lower jaw scrapes the ground and his upper jaw touches the sky. Fire burns from his eyes and nostrils. His brother Jörmungandr rises from the sea beside him, and the sky splits.

Odin, who has spent the entire mythology preparing for this specific day and gathering warriors in Valhalla against it, goes to meet him.

Fenrir swallows him whole.

All Odin's foresight, all his sacrifices, an eye given for wisdom and nine days hanging on the world tree, and none of it changes the outcome by a moment. That is the Norse position on fate, stated as plainly as it can be.

Vengeance follows immediately. Víðarr, Odin's son, steps onto Fenrir's lower jaw wearing a boot built from every scrap of leather ever discarded by every cobbler who ever lived, seizes the upper jaw and tears the wolf apart.

Which means the instrument of the wolf's death was assembled, slowly and without anyone noticing, out of the accumulated waste of ordinary human work.

Was Fenrir evil?

This is the question the myth is actually about, and the text does not answer it in the gods' favour.

Fenrir does nothing wrong before he is bound. He is a cub. He grows large, which is not a crime, and a prophecy says he will kill Odin, which has not happened yet.

Everything he is punished for is in the future. The gods act on a prediction, deceive him three times, and chain him to a rock with a sword in his mouth. Whatever he becomes afterwards, they built.

The Norse were not squeamish about this. Their gods are not good; they are powerful, clever, frequently dishonest, and doomed. Fenrir is what happens when beings like that try to outmanoeuvre fate and succeed only in causing it.

The modern reading, that Fenrir stands for suppressed nature breaking loose, and for what happens to something caged for what it might do rather than what it did, is a fair reading of what is on the page.

Fenrir and the runes

You will find claims that specific runes belong to Fenrir. It is worth being careful here.

The Tiwaz rune is genuinely Týr's: the name is the same word, and it is shaped like an upward arrow. Its associations with honour, justice and sacrifice are well grounded, and Týr's hand is the reason. That connection is real.

The Isa rune means ice and carries stillness and restraint, which maps neatly onto a bound wolf waiting under the earth.

But mapping runes onto mythological figures this way is a modern interpretive practice rather than an attested Norse one. The runes were an alphabet used for writing and for divination; there is no surviving source assigning one to Fenrir. Use the correspondence if it is meaningful to you, but do not mistake it for something the Vikings did.

Fenrir now

He is everywhere, and mostly under other names.

He turns up across video games, in Marvel, in metal, in fantasy fiction, and on a very large number of arms. As a tattoo he is one of the most requested Norse subjects, usually chosen for defiance rather than destruction.

Within modern Heathenry and Ásatrú he occupies contested ground. Some practitioners avoid him as a destructive force. Others take him precisely as a figure of resistance to unjust confinement, which is a defensible reading of the source material.

Our article on the werewolf myth covers the other great European story about wolves and human nature, and our piece on transformation rituals covers the Norse berserkers and úlfhéðnar who wore wolf pelts into battle.

Wearing Fenrir

The Fenrir motif recurs across our range more than any other mythological figure, and it suits a wrist better than anywhere else. A band around the arm is the right shape for a story about binding.

Our wolf bracelet collection includes Fenrir designs in steel and leather.

Our wolf t-shirt collection carries Norse and dire wolf prints.

And our wolf ring collection includes Viking knotwork and signet designs drawing on the same tradition.

Common questions

Who is Fenrir in Norse mythology?

A monstrous wolf, son of Loki and the giantess Angrboða, prophesied to kill Odin at Ragnarok. He is bound by the gods until the end of the world, when he breaks free.

What does Fenrir symbolize?

Chaos, fate and the failure of power to escape it. In modern readings, also confinement and resistance: he is punished for what he is predicted to become rather than for anything he has done.

Who are Fenrir's siblings?

Jörmungandr, the serpent encircling the world, and Hel, ruler of the dead. All three are children of Loki and Angrboða.

Why did Tyr lose his hand?

Fenrir demanded a hostage before allowing himself to be bound with Gleipnir. Týr placed his right hand in the wolf's jaws knowing it was a deception, and lost it when the trap closed.

What is Gleipnir made of?

Six things that no longer exist: 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.

Who kills Fenrir?

Víðarr, Odin's son, immediately after Fenrir swallows Odin. He stands on the lower jaw and tears the upper one apart.