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.
Idis (Germanic) was also extremely varied – fertility goddess, personal guardians, but also warrior-goddesses – the belief in the "dísir", like the belief in the valkyries, norns, and matrons, may be considered to be different manifestations of a belief in a number of female (half-?) goddesses." Jacob Grimm proposes a potential connection to the name of the Norse goddess Iðunn and the idisi. Grimm states that "with the original form "idis" the goddess Idunn may possibly be connected." Idis (Germanic) In Germanic mythology, an idis (Old Saxon, plural idisi) is a divine female being. "Idis" is cognate to Old High German itis