In Norse mythology, Fenrir (Old Norse: "fen-dweller"), Fenrisúlfr (Old Norse: "Fenris wolf"), Hróðvitnir (Old Norse: "fame-wolf"), or Vánagandr (Old Norse: "the monster of the river Ván") is a monstrous wolf. In both the Poetic Edda and Prose Edda, Fenrir is the father of the wolves Sköll and Hati Hróðvitnisson, is a son of Loki, and is foretold to kill the God Odin during the events of Ragnarök, but will in turn be killed by Odin's son, Víðarr.
In Norse mythology, the Valkyries were Odin's Shield Maidens, virgins with golden hair and snowy arms who soared above the battlefields to gather up fallen heroes and bring them back to Valhalla. They were later made popular by the Volsung Saga and the Niebelungenlied where Brunhild was a beautiful fallen Valkyrie who was stripped of her immortality for defying Odin and trying to protect the condemned Siegmund.
Odin, arrayed for battle armed with Gungnir and flanked by Hunin and Munin. The Norse did not believe their gods immortal. Even Odin, the chief of their pantheon was fated to die at Ragnarok, fighting the all-devouring Wolf, Fenrir.