Beta Ray Bill & Stormbreaker In Marvel Comics

Stormbreaker came into creation following the fight between Thor and Beta Ray Bill at Skartheim. After the battle, Bill began to feel guilt over his victory, now feeling that Mjolnir was Thor's by right. In a compromise, as Bill fairly won the battle, Odin had the Dwarves of Nidavellir create a new hammer made for the cyborg Korbonite warrior, crafted from the same Uru metal as Mjolnir. With the assistance of Eitri and other dwarf blacksmiths, they forged Stormbreaker.

In 1983, Beta Ray Bill was born from the imagination of celebrated Thor writer Walt Simonson, who wanted to explore the idea that there could be other people out there in the galaxy worthy of wielding Mjolnir. That's how Simonson came up with Beta Ray Bill, a member of an alien race called the Korbinites. An encounter in outer space led to a battle between Beta Ray Bill and Thor. After an incident caused Thor to revert back to his human persona of Donald Blake, Beta Ray Bill picked up Mjolnir and gained both its power and Thor's iconic costume.

Beta Ray Bill & Stormbreaker In Marvel Comics 

For a brief period of time, Stormbreaker and Bill became endowed with cosmic powers, given to them by the Silver Surfer, as a means to save Bill's life. This physically changed the hammer's appearance to that of an axe-like weapon with a hole in the center. This outside power source was necessary, for Yggdrasill was failing at the time, and the power of the Odinforce would not be around to sustain Bill's powers in the near future.Under unknown circumstances, both Bill and Stormbreaker returned to their normal, Odinpowered appearances sometime later.

Beta Ray Bill determined that with Mjolnir, he could become the savior of his people. He made a claim to the hammer, but it was naturally contested by its owner, Thor. The matter was taken to Odin, who decreed that the only way to settle who should keep Mjolnir was to have both of them fight it out to the death in Skartheim, a fiery hot realm. Beta Ray Bill won the fight, but only due to his species' natural resistance to fire. When he chose to spare Thor's life and wondered if he was making the right decision in taking away Thor's hammer, Odin came up with a solution. He decided that Thor should keep Mjolnir, and that Beta Ray Bill should be given a weapon of equal power. The axe known as Stormbreaker was forged and given to the alien. Since then, Beta Ray Bill has used Stormbreaker to protect the galaxy from various threats, and has occasionally returned to Earth for team-ups with Thor.

The door is open for Beta Ray Bill to appear in the MCU. The existence of his species, the Korbinites, was confirmed in Thor: Ragnarok by one of the gladiator statues in Sakaar. He was originally included in the movie, but Marvel Studios head Kevin Feige said he was was cut so that he could be done justice later. This suggests that Marvel does want to use the character — it's just a question of timing. Rumors have been swirling around for a while now, and though Thor 4 director Taika Waititi didn't confirm Beta Ray Bill would appear, he didn't shoot down the possibility either.

When Beta Ray Bill was captured by the Skrulls, they separated Stormbreaker into two, axe-like halves as weapon for the Super-Skrull that was sent to kill the gods of Asgard. How the Skrulls were able to circumvent the worthiness is still a mystery, but the Skrull was able to reforge the halves back into one whole weapon, hurling it towards the town of Broxton in an attempt to destroy it. After catching the hammer mere moments before it could hit the town, Thor returned Stormbreaker to its rightful owner once again.

During a conflict between Beta Ray Bill and Thor, who had been turned into an Herald of Galactus, Bill prevented Mjolnir from returning to its bearer's hand. Seeing no options to reach an agreement, Thor called Stormbreaker and destroyed it by hitting it against Mjolnir. 

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