Jarnbjorn was the Dwarven-forged battle axe wielded by Thor long before he obtained Mjolnir.[2]

In the 9th Century, unable to lift Mjolnir despite many attempts, Thor used Jarnbjorn as his regular weapon. With it he fought many foes on Earth, including frost giants,[2] trolls and dragons.[3]

During the 11th Century, Thor faced off with the Celestial-powered being called Apocalypse. Seeking revenge, Thor blessed Jarnbjorn with his own blood, giving it the power to pierce Celestial armor. Eventually Thor lost Jarnbjorn. Kang the Conqueror recovered Jarnbjorn from Baron Mordo's tomb in Brazil.[4]

The axe was then stolen from Kang by the Apocalypse Twins during their training under him. Uriel and Eimin used the weapon to kill a Celestial Gardener outside the Starcore Station, and became the new Apocalypse.[5] This murder was part of an elaborate plot concocted by the twins to frame Earth for the death of the Celestial Gardener so the Celestial Exitar would destroy it.[6] The Twins then convinced Scarlet Witch to cast a spell that transported every Mutant on Earth to their ark so mutant-kind would survive while humanity was destroyed with the Earth.[7]

In a divergent universe, their plan would've succeeded, but from the said universe, the remaining members of the Avengers Unity Division arrived and thwarted the Twins' plans.[8] Thor reclaimed Jarnbjorn and used it to kill Exitar by striking him in the neck.[1]

Jarnbjorn was replaced in the Asgardian armory. When Thor could no longer wield Mjolnir after his battle with Nick Fury on the Moon,[9] Thor took up Jarnbjorn once again.[10] While fighting Malekith and a force of Frost Giants under the sea, Malekith took Jarnbjorn from Thor and used it to cut off his left arm.


Forged by Dwarves, Jarnbjorn is naturally sharper than almost any Earthly weapon, and can cut virtually anything. In addition, Jarnbjorn has a charm placed on it that makes it indestructible, and it can be used to defend against any attack, even bursts of energy like Apocalypse's optic beam. Thanks to Thor's own enchantment, Jarnbjorn can pierce the armor of Celestials or armor created using Celestial technology.[4]

Alternate Reality Versions

Image Description Issue
Jarnbjorn from King Thor Vol 1 3 001.png On Earth-14412, in the far future, Jarnbjorn is wielded by Atli Wodendottir. Thor: God of Thunder #22
Jarnbjorn from Gwen Stacy Vol 1 1 001.jpg In an Unknown Reality, Jarnbjorn doubled as Gwen Stacy's guitar. Gwen Stacy #1


  • "Jarnbjorn" means "Iron Bear" in Old Norse (Járnbjǫrn), as well as some modern nordic languages, although in modern Norwegian/Swedish it would be spelled Jernbjørn/Järnbjörn.
  • The weapon's name might be a reference to Jarnsaxa, Thor's giantess lover from norse myth.

See Also

Links and References


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