Asgard

Asgard is the home realm of the Asgardians. It was ruled by Odin the Allfather; other notable inhabitants include Thor, Loki and Frigga. It is based on the Norse mythological world of the same name. It is one of the Nine Realms.

Asgard is a celestial planetoid in an unknown part of the Marvel Cinematic Universe. Asgard is believed to be the first extraterrestrial world to ever make contact with Earth.

History

Thor

Asgard is one of the "nine realms" of the World Tree Yggdrasil; its precise location is unclear, but it appears to reside in a distant dimension far removed from Earth's. Its people are known to be keepers of peace throughout the realms. The ruler of Asgard, Odin, has tried to maintain this peace since the war between the Asgardians and the Frost Giants. However, Odin's reckless son Thor nearly disrupted the peace between the Asgardians and the Frost Giants, almost causing another war.

Captain America: The First Avenger

Johann Schmidt was aware of the existence of the Asgardians nearly seventy years before they next visited Earth. Upon touching the Tesseract and being incinerated by its power, his remains were scattered across the World Tree.

The Avengers

When Loki reemerged to subjugate Earth under the employ of Thanos, the World Security Council briefly speculated a declaration of war against Earth from Asgard, though Nick Fury was quick to deny that Loki represents the Asgardians. It is revealed that, after the incident with Thor and the Destroyer, which was the first recorded extraterrestrial attack, S.H.I.E.L.D. began building weapons using the energy of the Tesseract to counter alien attacks. Odin sent Thor to retrieve Loki, before becoming a founding member of the Avengers. After Loki's defeat, Loki was taken back to Asgard.

Thor: The Dark World

After the destruction of the Bifrost, the Nine Realms plunged into chaos, leading to Thor working restlessly to restore order and end the pillaging of the Marauders. After Jane Foster accidentally discovers the Aether upon the leadup to the "convergence", Dark Elves attack Asgard. As Odin is unwilling to accept Thor's plan to deceive the Elves, Thor and his companions become fugitives and break the prisoner Loki from the dungeons. Loki is presumed dead during a battle with Kurse. When Thor defeats Malekith and the Dark Elves, Odin releases Thor and his companions from the charges against them. Unbeknownst to Thor, Odin has vanished and the real ruler of Asgard is Loki, under the disguise of Odin.