In the MCU, five people have lifted Mjolnir: Odin, Hela, Thor, Captain America, and Jane Foster. The hammer apparently is semi-intelligent. It can determine if someone is worthy and it lets a worthy person lift it. Apparently the standards were different when Hela possessed the hammer.
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. Mjolnir returns in Thor: Love and Thunder (2022) with Jane Foster wielding a reconstructed version of the hammer.
In the battle, Thor launched Mjolnir at Moon Knight, who then stopped it in midair. He then explained that he had the power of the moon god and that Uru, the metal that created Mjolnir, was made out of moon rock - meaning he was someone else who has lifted Thor's hammer.
Summary. Wielders of Thor's hammer, Mjolnir, must possess compassion, restraint, nobility, wisdom, and humility. The MCU version of Captain America embodies these qualities, making him worthy of Mjolnir's power. Mjolnir's power can rewrite one's spirit, potentially leading to dire consequences for its wielder.
Powerful in the Marvel Cinematic Universe (and exceedingly more so in the comics), the hammer can only be lifted by Thor or anyone else who happens to be "worthy" of the honor.
Although Kratos never gets to wield the hammer, given his own extraordinary godly strength that slightly surpassed even that of Thor and even being able to hold Mjolnir back with his bare hands when Thor threw it at him, it's very likely that Kratos would be fully capable of using the hammer if he wanted to.
The simple answer is no. Yes, Hulk absolutely smashes Thor to the ground with Mjolnir, but, he's holding both Thor and the hammer. Hulk wouldn't have been able to lift Mjolnir by himself, but since the God of Thunder had a firm grip on it as well, he was able to use it as a weapon against his teammate.
Mjolnir is not particularly heavy, it weighs 42.3 lbs. The fact that almost no one except Thor can lift the hammer has nothing to do with it's physical weight. The hammer is enchanted so that only those deemed 'worthy' are able to wield it.
In the end, Deadpool wasn't worthy. While he seemingly had control of Mjolnir and the strength of Thor, it was all a mirage put on by Loki to distract Thor.
While no one besides Thor has been able to truly wield the awesome might of Stormbreaker, Groot was the very first being to hold this weapon when one of his arms became the handle for the mighty axe.
The clone of Squirrel Girl, Allene, had defeated the Avengers by the time Squirrel Girl showed up and in the ensuing battle, Squirrel Girl was able to lift Thor's hammer and become the Goddess of Thunder.
Moon Knight even seized control of Mjolnir as he revealed that the Uru metal of the hammer is just another moon rock. So while Moon Knight couldn't physically wield the hammer, he could command it to obey his will. And that control extended to Khonshu as well.
And not only that, their mission is noble enough that it's earned the loyalty of Mjolnir. While it is still Thor's hammer, it won't hurt one of the Panther Kings. It's even revealed that in the past, the first Black Panther actually once wielded the hammer himself, using it in unseen battle to protect the world.
But there have been people that weren't worthy. and still lifted it due to their strength or abilities. Which definitely applies for Magneto, as he has lifted Mjolnir several times in the comics.
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.
After bashing Thor with an entire stone pillar, Juggernaut managed to separate Thor from his hammer – but was unable to lift it as a selfish brute like him was unworthy of its power.
Since Mjölnir can only be wielded by the worthy, Juggernaut has no chance of lifting it. However, that doesn't stop him from using it. In most fights against Thor, Thor throws his hammer at full speed towards Juggernaut, but Juggernaut's mystical force field stops Mjölnir in mid-air.
Wolverine more than proved that he's a hero, but the amount of bad things he'd been involved in burned his soul. While Wolverine would never be worthy of Mjolnir, he wouldn't hesitate to support and fight alongside anyone who wielded it.
Can Magneto lift Mjolnir with his metal powers? Yes he can,, but he won't get any powers. Still though having an indestructible hammer to manipulate is pretty handy With that being said Thor can also use Mjolnir to remove Magnetos forcefields …
Although Stormbreaker and Mjolnir have very similar properties and powers, Stormbreaker is the most powerful weapon wielded by Thor so far. The obvious reasons are that Stormbreaker is the physically larger weapon out of the two, and not to mention that it is an axe, which could well be more dangerous than a hammer.
Thanos and Hulk have clashed several times in Marvel lore, with Thanos even admitting he was scared to face the Hulk before acquiring the Infinity Stones. While Thanos is usually the victor, it's generally down to him using superior tactics and technology, rather than simply possessing greater physical strength.
There's no question the Hulk is a near-indestructible force who comes out on top in almost all of his battles of pure strength. However, against Superman, he's outmatched. While Hulk's strength might rival that of the Man of Steel, Superman's other abilities give him a considerable edge against his opponent.
This issue marks a significant and historic Marvel moment, where Thor finally beats Hulk for the first time, fair and square. However, this same issue has Hulk recover and successfully knock out Thor before the end.
