Riordan Wiki

That eagle thinks he’s all that. Well, my new insult will be so scathing he’ll molt his feathers. Now all I have to do is think it up.

–Nidhogg in 9 from the Nine Worlds

Vedrfolnir (also spelled Veðrfölnir, Vedfolnir or Vethrfolnir) is a hawk who sits on top of an unnamed eagle that lives at the top of the world tree, Yggdrasil. It flaps its wings to create windstorms causing the branches to rip, shake, and cause devastation (high winds, earthquakes and storms) throughout the Nine Worlds. Ratatosk constantly delivers insults to him to keep him angry and try to destroy the tree faster than Nidhogg at the roots.

Magnus Chase and the Gods of Asgard

The Sword of Summer

While traveling through Yggdrasil for the first time, Blitzen tells Magnus Chase about how Ratatosk carries insults from the eagle to Nidhogg. The two are kept in a frenzy due to the lies, rumours, and nasty gossip about each other from Ratatosk. Magnus thinks that's crazy as they all live in the tree, including the squirrel, but Blitz says people have destructive impulses and some of us want to see the world in ruins just for the fun of it.

9 from the Nine Worlds

So’s Your Face!

After escaping Niflheim and ending up at Hvergelmir, Mallory Keen helps Nidhogg come up with insults for the eagle.


Hunding describes the eagle's appearance as fierce and feathery.


  • Hunding wonders why the eagle is unnamed and suggest that they might as well hold a contest for a name.
    • Some say that the eagle's name is Hræsvelgr. But he is merely a Jotunn that can turn into an eagle. He sits at the end of the world (or the northern edge of the heavens) and causes the wind to blow when he beats his wings in flight.
  • At Ragnarok, it is said that the eagle and Nidhogg will fight each other.
Magnus Chase and the Gods of Asgard
Core Series: The Sword of Summer | The Hammer of Thor | The Ship of the Dead
Main Characters: Magnus Chase | Alex Fierro | Blitzen | Halfborn Gunderson | Hearthstone | Loki | Mallory Keen | Samirah al-Abbas | Sumarbrander | Thomas Jefferson Jr.
Secondary Characters: Randolph Chase | Gunilla | Natalie Chase | Amir Fadlan | Alderman
Minor Characters: Annabeth Chase | Frederick Chase | Helgi | Hunding | Vala | Junior | Lars Alhstrom | Stanley | Inge | Percy Jackson | Stan | Alviss | Miles | Wildflower | Sunspot | John Henry
Norse Gods: Freya | Thor | Balder | Ullr | Frey | Odin | Heimdall | Vidar | Sif | Frigg | Tyr
Minor Gods: Skírnir | Mimir | Ran | Hod | Hel | Sigyn | Aegir | Nine Billow Maidens | Njord | Kvasir | Holler | Forseti | Glum | Lofn | Sól | Idunn
Jotnar: Surt | Gerd | Norns | Utgard-Loki | Harald | Ymir | Geirrod | Gjalp | Greip | Thrym | Thrynga | Tiny | Little Billy | Hrungnir | Red | Tattoo | Gunlod | Suttung | Baugi | Skadi | Hrym | Eggther | Norns
Monsters: Jormungand | Ratatosk | Vedrfolnir | Nidhogg | Fenris Wolf | Lindworm | Wight | Brunnmigi | Siersgrunnr | Garm
Magical Creatures: Dwarf | Elf | Sleipnir | Stanley | Marvin | Otis | Hulder | Nøkks | Vatnavaettir | Nisser | Troll | Raven | Hugin and Munin
Related Content: Rick Riordan | Hotel Valhalla Guide to the Norse Worlds | 9 from the Nine Worlds