Fenrir

Fenrir (Old Norse 'fen-dweller') or Fenrisúlfr ('Fenrir's wolf', often translated 'Fenris-wolf'), also referred to as Hróðvitnir ('fame-wolf') and Vánagandr (Old Norse 'monster of the [River] Ván'), is a monstrous wolf in Norse mythology. In Old Norse texts, Fenrir plays a key role during the events of Ragnarök, where he is foretold to assist in setting the world aflame, resulting in the collapse of humanity and society, and kill the god Odin.

• Fenrir shall with impious tooth
  Slay the sire of rolling years:
  Vithar shall avenge his fall,
  And, struggling with the shaggy wolf,
  Shall cleave his cold and gory jaw.
  • From the Poetic Edda (Vafþrúðnismál), as translated by W. Taylor in H. W. Longfellow, The Poets and Poetry of Europe, 2nd ed. (1870), p. 43

• Hel, sister
• Loki, father
• Miðgarðsormr, brother