Today's Fact
Asgard still tells the story of the wager Loki nearly lost — and the foal he handed Odin when he finally came home.
In the old Asgardian tale retold for Marvel readers in sources including Marvel Pets Handbook Vol. 1 #1 (2009), a builder's stallion Svadilfari was hauling stone so fast that a great wall was about to be finished on schedule — and a wager Loki had encouraged was about to be lost. Loki's solution was sabotage by shapeshifting: he transformed himself into a mare and lured Svadilfari away from the work and into the wilds.
The stallion chased the mare across the pastures, the building stalled, and the deadline slipped away. When Loki next returned to Odin, he did not come back empty-handed or, strictly, alone: he brought an eight-legged grey colt, Sleipnir, and gifted the foal to the All-Father. Sleipnir grew into the fastest and most respected steed in Asgard and became Odin's favourite mount.
That makes Sleipnir the one child Loki actually gave birth to, in a family tree otherwise built the ordinary way — a brother, by the strangest route imaginable, to Fenrir, Jormungandr and Hel. Marvel's Asgard keeps both tellings of Sleipnir's origin in its lore, but the mare story is the version the old myths handed down, and the one Odin's poets never let Loki forget.
Why It's Obscure
The distraction worked. The consequences had eight legs.
Gallery
Sleipnir with his eight legs on show, Odin riding him, and Loki himself.



Sources
Every fact on this page was checked against at least two independent sources before publication.
Bullpen Bulletins
- Comic Basics — What Loki Gave Birth To Recounts Sleipnir's comics origin as told in Marvel Pets Handbook #1: the mare, Svadilfari, and the foal gifted to Odin.
- Screen Rant — Loki Actually Gave Birth to a Horse in Marvel Comics Summary of the Marvel Comics version: Loki shapeshifts into a mare to stall the wall-builder and gives birth to Sleipnir.
- Marvel Cinematic Universe Wiki — Sleipnir Reference confirming Sleipnir as Odin's eight-legged steed and, in the underlying myth, Loki's son by Svadilfari.