In all of the Symbols in Norse mythology, Thor’s Hammer, Mjölnir meaning lighting, is one of the most important historically. Thor, meaning Thunder, is considered the unrelenting god responsible for guarding Asgard, the celestial stronghold of Aesir. The Hammer is Thor’s primary weapon, and embodies the spirit of the storm, explaining the echo of thunder heard when the hammer crashes down on his foes. This keychain contains a replica of the Hammer used in the depiction of Thor in the Avengers movies.