Loki Laufeyjarson is the mythical being of mischief in Norse mythology, a son of the giants Fįrbauti and Laufey, and foster-brother of Odin. He is described as the "contriver of all fraud". He mixed freely with the gods for a long time, even becoming Odin's blood brother. Despite much research, "the figure of Loki remains obscure; there is no trace of a cult, and the name does not appear in place-names. In mythological terms, Loki is not a god, as he has no cult or followers (no evidence has ever been found or even referenced), rather he is a mythological or mythical being (like any other giant in Norse mythology). This is further supported by the fact that he was not a member of Vanir and is not always counted among the Ęsir, the two groupings of gods. Sources inconsistently place him among the Ęsir; however, this may only be due to his close relation with Odin and the amount of time that he spends among the Ęsir (as opposed to his own kin).
Like Odin (though to a lesser extent), Loki bears many names : the Sly-One, the Sly-God, the Shape-Changer, the Trickster, the Sky Traveller, the Sky Walker, the Lie-Smith and Loftur among others. The composer Richard Wagner presented Loki under an invented Germanized name Loge in his opera Das Rheingold--Loge is also mentioned, but does not appear as a character, in Die Walküre and Götterdämmerung. The name comes from the common mistranslation and confusion with Logi (a fire-giant), which has created the misconception of Loki being a creation of fire, having fire for hair or being associated with fire, like the Devil in Christianity.