|Appeared in|| Thor|
Thor: The Dark World
Jotunheim is one of the Nine Realms of Yggdrasil and the homeworld of the Giants, or Jotuns; Frost Giants and Rock Giants. The word means "home of the giants" in Old Norse. It is based on the mythical realm of the same name of Norse mythology.
In Thor, Jotunheim is first seen during the first war with Asgard, where it is seen devastated by the war and surrenders to the Asgardian king Odin. Over a millenium later, in the twenty first century, Jotunheim is still devastated by the war. Thor , Loki , Sif and the Warriors Three trespass Jotunheim to question Laufey as to how three Jotunns entered Asgard in a failed attempt to steal the Casket of Ancient Winters. Laufey insists that an Asgardian granted his soldiers access into Asgard. When Thor fights with the inhabitants of Jotunheim, Laufey threatens a declaration of war, resulting in Thor's banishment from Asgard. It is later revealed that Loki is Laufey's son, taken from Jotunheim and adopted by Odin. When Loki becomes the Regent King of Asgard in Odin's place, he reveals that he allowed the Jotuns into Asgard to stop Thor from being pronounced king. Loki forms a pact with Laufey that will let Laufey kill Odin in his sleep, but Loki betrays and kills Laufey before he can do so. Jotunheim is partially devastated when Loki uses the full power of Bifrost to try and destroy Jotunheim, before the now reformed Thor saves the race by destroying the Bifrost, and in doing so destroying Asgard's only means of interplanetary travel.