Fafnir (Marvel Comics) entities is stopped when Thor agrees to go to Hel's realm willingly. Fafnir later reappears in the 2011 limited series "Avengers Prime" in the aftermath of the "Siege" storyline as, at first, an adversary then ally of Thor, Tony Stark and Steve Rogers with several legions of ogres and elves in battle against a Twilight Sword wielding Hela and her army. Fafnir was originally a normal man until transformed by the properties of a magical pool into a large dragon. Fafnir retains his intellect and speech, possesses superhuman strength and durability, and the ability to breathe fire and cast illusions.
Investigations into Germanic Mythology concerning resemblances of Thor and Indra were carried to extremes, therefore receiving "less recognition than they deserved." Others refute individual points of the work. Still others have commented on what they see as fundamental flaws in Rydberg's methodology. While many modern scholars object to any systematization of the mythology including the one imposed by Snorri Sturlusson, believing it artificial, John Lindow and Margaret Clunies Ross have recently supported a chronological systemization of the most important mythic episodes as inherent in the oral tradition underlying Eddic poetry. Rydberg, however, believed that most of the Germanic myths could be fit into such