Fafnir (Marvel Comics) first encountered in the guise of an old man by the warrior Volstagg, who with his companions is currently exploring the ruined realm of Nastrond, an extradimensional realm on the continent of Asgard. Fafnir explains he was the King of Nastrond, and that the King of the Norse Gods Odin destroyed Nastrond due to the evil nature of its people. Fafnir himself was left to die in a ruined wasteland, but survives by drinking from a pool of water with magical properties. The water, however, transforms Fafnir into a massive dragon. Knowing that Volstagg and his allies were sent by
Fafnir while cooking the heart, gained knowledge of the speech of birds and learned of Regin's impending attack from the Oðinnic (of Odin) birds' discussion and killed Regin by cutting off his head with Gram. Sigurd then ate some of Fafnir's heart and kept the remainder, which would later be given to Gudrun after their marriage. Some versions are more specific about Fáfnir's treasure hoard, mentioning the swords Ridill and Hrotti, the helm of terror and a golden coat of chainmail. Fafnir appears – as "Fafner" – in Richard Wagner's epic opera cycle "Der Ring des Nibelungen" (1848–1874), although he began