Seeking a way to save his people from their dying planet, Brokk, king of the Dwarves, wins the Tesseract from the Grandmaster in a game of cards.
It was then used in the create the Nidavellir Ringworld.
After taking the Aether from the Dark Elves, Bor had it sealed in a cell deep in the Realm Below.
Sigurd takes the heart of Fafnir to Regin Hriedmarson to be cooked, as eating the heart of a Dragons can grant great knowledge. However, before it was finished cooking, some fat landed on his finger, and he sucked it off, gaining the ability to understand the language of birds. . Ikol, in the form of a magpie, warns Sigurd that Regin is planning to kill him, so that he can take Fafnir's gold, so Sigurd murders him.
After Nidavellir is brought under the control of the Asgardian Empire during the Conquest of the Nine Realms, the Tesseract is gifted to Odin as tribute by Eitri.
The Tesseract is stored in Odin's Vault.
Sigurd the Everglorious slays the Dragon Fafnir. During the battle, his sword Gram was drenched in the dragon's blood, becoming imbued with the curse of Andvari's Gold.
In the 19th year of the reign of Odin, a son is born to the All-Father and his second wife, Frigga.
An uprising against Asgardian Imperial control, lead by the new King of Jotunheim, Laufey.
He's captured by S.H.I.E.L.D. and while restrained is visited by Loki who tells him Odin is dead and Thor is banished eternally.