Sleipnir (pronounced "SLAYP-neer") is the eight-legged horse son of Loki and the horse Svadilfari. Hence, he is also the half-brother of Hel, Jormungand, Fenris Wolf and Samirah al-Abbas.

Odin uses the steed as his mount, so only he can summon Sleipnir as a result.

Magnus Chase and the Gods of Asgard

The Sword of Summer

Sleipnir is mentioned when Hearthstone summons one of his children to help him and his friends get to Geirrod's castle.


  • Rudolph the Red-Nosed Reindeer, the most famous of all Santa’s helpers from a Christmas story of the same name, was inspired by Sleipnir.
    • Rudolph and his red nose was actually inspired by Sleipnir's habit of feasting on the entrails of Odin's enemies.
  • Sleipnir could be considered as the Norse counterpart of Arion.
    • Both are horses.
    • Both were born to a god/goddess who were disguised as a horse (Loki and Ceres).
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 | Mallory Keen | Samirah al-Abbas | Sumarbrander | Thomas Jefferson Jr.
Minor Characters: Annabeth Chase | Frederick Chase | Gunilla | Randolph Chase
Norse Gods: Freya | Frey | Thor | Loki | Odin | Frigg | Ullr | Vidar | Heimdall | Sif
Minor Gods: Hel | Mimir | Ran | Aegir
Jotnar: Surt | Utgard-Loki | Ymir
Monsters: Ratatosk | Jormungand | Fenris