Thor’s axe is named Jarnbjorn, also known as Iron Bear or Iron Bear’s Claw. Jarnbjorn is a legendary weapon from Norse mythology and is closely associated with Thor, the Norse god of thunder and lightning. In Marvel Comics, Jarnbjorn is depicted as a powerful enchanted axe wielded by Thor, the popular superhero known for his strength and heroism.

Jarnbjorn holds significant significance in Thor’s mythology and has been portrayed in various comic book storylines, movies, and other media adaptations. Let’s delve deeper into the history, origin, and characteristics of Thor’s axe, Jarnbjorn.
History and Origin: In Norse mythology, Jarnbjorn is a fabled weapon that is believed to have been created by the dwarves, Brokk and Sindri. According to the myth, the dwarves created Jarnbjorn as one of the gifts they presented to the gods of Asgard, including Thor. Jarnbjorn is described as a mighty axe with a sharpened head made of iron or steel, and its name roughly translates to “Iron Bear” or “Bear’s Claw” in Old Norse.
In the Marvel Comics universe, Jarnbjorn is initially depicted as a double-headed battle axe with a simple design, featuring a straight handle and two sharp blades. It is said to have been forged in the fires of a dying star, making it an extremely powerful weapon with mystical properties.
Characteristics and Abilities: As depicted in Marvel Comics, Jarnbjorn possesses several remarkable characteristics and abilities that make it a formidable weapon in Thor’s arsenal. Some of its notable features include:
- Enhanced Strength: Jarnbjorn enhances Thor’s already impressive strength, making him even more powerful in combat. With Jarnbjorn, Thor can deliver devastating blows and cleave through various materials, including magical and enchanted substances.
- Energy Projection: Jarnbjorn has the ability to project powerful energy blasts. Thor can channel his lightning through the axe, amplifying its destructive potential and delivering devastating energy attacks to his enemies.
- Enchanted Edge: Jarnbjorn’s edge is enchanted, allowing it to bypass magical defenses and pierce through mystical barriers. This makes it highly effective against opponents who are resistant to conventional attacks.
- Returning Property: Jarnbjorn has a unique property of returning to Thor when thrown. Similar to Thor’s iconic hammer, Mjolnir, Jarnbjorn can be thrown at enemies and will return to Thor’s hand, making it a versatile and deadly weapon in combat.
- Worthiness Requirement: In some storylines, Jarnbjorn has been depicted to have a “worthiness” requirement, similar to Mjolnir. This means that only those who are deemed worthy can wield the axe and utilize its full power. This aspect adds an additional layer of complexity to the mythology and lore surrounding Jarnbjorn.
Significance in Storylines: Jarnbjorn has played a significant role in various comic book storylines involving Thor in the Marvel Comics universe. One notable storyline where Jarnbjorn is prominently featured is the “Original Sin” storyline, where Thor becomes unworthy to wield Mjolnir and takes up Jarnbjorn as his new weapon. This storyline explores Thor’s struggles with losing the ability to wield Mjolnir and his journey to reclaim his worthiness.
Jarnbjorn has also been featured in other storylines and comic book arcs, where it has been instrumental in defeating powerful adversaries, breaking through formidable barriers, and protecting Asgard and the Marvel Universe from various threats. Its unique abilities and significance in Thor’s mythology make it a beloved and iconic weapon among Marvel Comics fans.