One of the hammer's most notable attributes is its worthiness enchantment. This spell surrounding Mjolnir prevents it from being wielded by anyone save those who have been found worthy. To anyone else, Mjolnir can't be lifted from the ground.
Loki is confirmed to be worthy of lifting Thor's hammer, Mjolnir, for the first time in official Marvel canon. In The Immortal Thor #5, Loki confidently catches and wields the hammer, showcasing his growth and heroism.
Why couldn't Thor pick up his hammer in the movie Thor?
With his Infinity Formula that had kept him from aging failing him, Fury was severely weakened but able to incapacitate Thor by whispering something in his ear that immediately made him unable to lift Mjolnir; the Odinson rendered unworthy in an instant.
Loki is much more skilled than Thor in the use of his powers. He has to be because even though he is more powerful than the other Asgardians he is tremendously outclassed by Thor and Odin by magnitudes of power. Realizing this he developed his brain. He realized that knowledge could even the odds.
This arguable arrogance may have also contributed to being unable to lift Mjolnir. Likewise, the Hulk was, at the time, a rampaging beast, lacking much else in the way of personality. Thus, he had no morality or sense of justice, being ethically unworthy of Mjolnir's might.
Thor: Love and Thunder being absolute trash for 3 minutes straight
Can Thanos lift the Mjolnir?
While the primary Thanos from Earth-616's universe was defeated and was never worthy to lift Mjolnir, it's possible that a future (or existing) variant of Thanos could.
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.
Portrayed by Anthony Hopkins, Odin is the powerful ruler of the Nine Realms who has sworn to protect every kingdom under his rule. With Odin still ruling Asgard, Thanos would have easily been stopped had he made a play for the Infinity Gauntlet.
So while Zeus' best feat is defeating a mountain-sized monster, Odin's best feat is defeating a monster as big as nine worlds. Odin outclasses Zeus in intelligence, versatility, strength, and weapons. Zeus simply can't compete. The winner is Odin, All-Father of the Æsir.
There, Hawkeye witnessed Thor's attempts to lift the hammer when the Asgardian hero was banished to Earth and thus had none of his powers, meaning he wasn't worthy of holding the hammer.
Hulk's Infinity War Betrayal Proves He Wasn't Worthy
Bruce Banner has always tried to balance science and morality, so his unworthiness to wield Mjolnir suggests that something deeper is holding him back.
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 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.
As Skyfather of Olympus, Zeus wields power comparable to Odin, whose wrath Thanos has withstood but not bested. At the same time, Zeus cannot truly die. While the most powerful of Olympians can be badly wounded or even dismembered, he can never actually pass on into oblivion.
The Olympian and the Asgardian are evenly matched in terms of both strength and durability. For comparison, both Thor and Hercules' durability and raw power pale in comparison to the likes of Zeus - a low-key but crucial Thor: Love and Thunder spoiler for any future outings of the Olympians.
Odin would beat thor a hundred times before it ever came down to a fight, but if it ever somehow came down to a legit fight, thor would beat his old man.
If he was relatively calm Odin would probably engage the Hulk physically to underline the difference in power between them. Odin would crush hulk! Odin is the most powerful being in the nine realms outside of cosmic entities.
While Thanos is an Eternal and has the standard powers of super-strength, agility, regeneration, immortality, and more, Adam Warlock takes the upper hand. He can be killed, but he resurrects to be stronger every time.
Odin stands a good chance at defeating a moderately-fed Galactus. Odin has been stated to be equal to a moderately-fed Galactus. Though Galan did withstand a powerful headbutt from Odin. The Devourer had just consumed one planet before that.
Storm breaker is meant to be the strongest weapon of Asgard and could even summon bifrost, says Eitri. But there is no enchantment or spell on it like it was on Mjolnir. So one doesn't have to be worthy to weild it, just the strength to lift it. Clearly Thanos is capable of lifting it.
By most accounts, Superman seemingly outclasses Thor in terms of raw strength, especially in earlier versions of the DC Universe. He's pulled planets, punched people into orbit, and performed all sorts of wild feats of strength.
