Both are melee weapons and were created out of Uru metal forged with the heat of a dying star in the Dwarven kingdom of Nidavellir, with the assistance of the dwarf king and master weapon-maker Eitri.
Stormbreaker is an enchanted axe-hammer used by Thor. It was forged from Uru in the heart of a dying star on Nidavellir. Eitri claimed the weapon was the strongest weapon in Asgard history. During the conflict with Thanos, Thor ventured to Nidavellir with Rocket Raccoon and adolescent Groot to forge Thor's new weapon.
How did Thanos manage to lift Stormbreaker? Thanos was able to lift Stormbreaker because the axe doesn't have worthiness enchantment as Mjlolnir does. Mjolnir is specific when it comes to the wielder's might since the only prerequisite to wielding is that the wielder is “worthy” of its might.
“It's well documented that the hammer is made out of 'Uru,' a fictional metal from Thor's native realm of Asgard.”
Meanwhile, MCU Phase 4 saw Stormbreaker being wielded by Thor, Gorr the God Butcher, Love, and anyone else who was strong enough to actually lift and swing it. This is because of the respective origins of both legendary Asgardian weapons.
Thor's hammer Mjolnir was defined by the fact that only the 'worthy' could lift it – so basically no-one except the god of thunder (and Vision, for some reason). But when it comes to the weapon's replacement, Stormbreaker – which Thor forges in Avengers: Infinity War – Groot is able to lift it too.
Stormbreaker has the additional power to summon the Bifröst, allowing Thor to teleport anywhere in the Nine Realms. Screen Rant has identified Stormbreaker as the more powerful of the two, based on this ability, as well as it being a much larger and edged weapon.
In a moment of wistful affection for his girlfriend, Thor asked his trusty hammer to always protect Jane, and in doing so unwittingly enchanted Mjolnir to do just that. Just like Thor's father Odin once enchanted the hammer to only be lifted by someone who is worthy, Thor cast a spell that let Jane use its powers.
Yes, even Spider-Man has been worthy of holding the hammer of Thor.
Interestingly, according to comics, one of Moon Knight's abilities even allows him to control Thor's hammer (Mjolnir) which otherwise only Captain America and Hela could do in previous MCU films.
Stormbreaker is jealous about Mjölnir's return because the ax is basically a moody teenager.
Like Stormbreaker, Mjolnir also allows Thor to wield thunder and lightning; however, it's not capable of summoning the Bifrost. The magic hammer did develop a power Stormbreaker couldn't, though, and it's able to detach its broken pieces to attack multiple enemies at once, before coming together again.
Hela Was Worthy Enough to Destroy Mjolnir
But the impactful scene in Thor: Ragnarok depicts Hela catching Mjolnir in mid-air before then crushing it to pieces. Odin previously told Thor the power of the Uru metal had no equal. Clearly, however, that was an overstatement, considering Hela destroys the hammer with ease.
Absolutely yes. In fact, there are quite a few misconceptions about Thor's abilities. Even Thor himself was unaware in Marvel's Thor: Ragnarok film.
Mjolnir was forged for Thor Odinson's grandfather by the dwarves, who used the core of a star and Uru metal to form the iconic hammer and imbue it with its immense strength and magic. It is nearly invulnerable and is capable of great destruction.
The Leviathan Axe is Canonically More Powerful than Mjolnir.
Another version appears in the seventh episode, which Thor uses to fight against Captain Marvel. For unexplained reasons, Thor remains the only one able to lift the hammer in this universe despite Odin never shown enchanting it with the "worthy" spell.
As the Allfather and ruler of Asgard, Odin Borson is naturally worthy to wield Mjolnir. It was Odin who commissioned the Dwarves of Nidavellir to forge the hammer in the first place.
NOT WORTHY
The Dark Knight might be one of the least worthy heroes in any universe. While Batman does have some of the characteristics that would allow him to lift Mjolnir, he also has committed several acts that disqualify him.
Originally there was no restriction placed on the hammer for who can use it but after Thor's reckless behavior, Odin Borson placed an enchantment on it. This spell read "Whosoever holds this hammer, if he be worthy, shall possess the power of Thor." Only those deemed worthy to lift Mjolnir can.
In the first Thor film, the title character was deemed unworthy by his father Odin, who banished his son to Earth until he proved otherwise. The story ultimately ended with the thunder god's self-sacrifice reconfirming his worth, allowing for Thor's first reclamation of Mjolnir.
Thor feels like he is responsible for the fall of Asgard, the loss of his family, and Thanos' snap, but this moment shows that your heart and your intentions matter more than your actions. He's worthy because he still cares, even if he tries to act like he doesn't.
Endgame Detail Proves Thanos Knew He Couldn't Lift Mjolnir - Theory Explained. While many believed Thanos lifted Mjolnir during the Battle of Earth in Avengers: Endgame, a detail shows he knew he wasn't worthy of it.
The Asgardian Son of Odin was extremely close to ending Thanos at the end of Avengers: Infinity War. After gaining the powerful weapon Stormbreaker, Thor becomes the wielder of the most powerful weapon in the universe. Stormbreaker is capable of killing Thanos outright, and only Thor is currently worthy of wielding it.
With Thor: Love and Thunder having come out, Jane Foster (played in the movie by Natalie Portman) has taken her rightful place as one of the most famous Mjolnir-wielders. When Thor suddenly lost the ability to lift his weapon, it granted his ex, Jane Foster, the power to lift it and obtain its powers.