—Thor[source]The Furnaces of Nidavellir. Land of the Dwarves. Mjolnir, my hammer, was forged here. As well as another, Stormbreaker, for Beta Ray Bill. Two hammers.
History

Paraphernalia
Weapons
Seemingly those of the Beta Ray Bill of Earth-616.
—Thor[source]The Furnaces of Nidavellir. Land of the Dwarves. Mjolnir, my hammer, was forged here. As well as another, Stormbreaker, for Beta Ray Bill. Two hammers.