After Iron Man promised to keep the secret that anyone can lift Mjolnir now, Tony revealed that he recorded a video of him hitting Thor with the hammer and dared Thor to one-up him, a challenge which the Thunder God readily accepted. Surprisingly, This wasn't the only time that Iron Man lifted Mjolnir.
Mjolnir has been manipulated in different ways in Marvel Comics, and many years ago, Iron Man was able to hold the hammer… thanks to zero gravity, meaning that he didn't properly lift it and he would have still not been able to wield it on Earth because he wasn't worthy.
Other Marvel characters have lifted Mjolnir not through worthiness but through technicalities such as absorbing Thor's powers, including the Air-Walker, Awesome Android, Magneto, Rogue, Wonder Man, and Doctor Doom.
While there may be several Mjolnirs in the multiverse, there is only one on Earth-616. Loki is stunned to see that Iron Fist can lift Mjolnir to toss it off his body and save him.
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.
Avengers: Age of Ultron - Lifting Thor's Hammer - Movie CLIP HD
Can Superman lift Thor's hammer?
It's important to note that the rules around worthiness had been temporarily suspended to allow this to happen. As soon as the fight was over, Superman couldn't lift the hammer anymore. However, under normal circumstances, without any weird interference, Superman is worthy of Mjolnir.
Originally Answered: Can the Hulk lift Thor's hammer? Yes and no, strictly speaking. The Hulk had had carried Mjolnir in some circumstances but only in outside continuity and dream sequences. For example, the Hulk used Mjolnir to defeat Thor while he was still wielding it.
Jarvis doesn't lift Thor's Hammer. Jarvis is an AI. Vision lifts Thor's Hammer. Vision is still very new, freshly created, and hasn't done anything yet that would not make him worthy.
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.
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.
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.
In the former movie, it was likely Tony's narcissism and lack of humility that contributed to his “unworthiness.” These attributes did, however, make him a hero. After saving the world, making a play to sacrifice himself, and defeating Thanos' army, he was not able to lift Mjolnir in Age of Ultron.
A machine can pick up the weapon and move it anywhere since it's mindless and incapable of possessing the morals necessary to be considered worthy. By this logic, Ultron himself could have lifted it, but it wouldn't have done him much good.
It could probably lift it, but not wield it. As in, not be able to use any of the abilities that came with it. Probably? The vision can do it because he is similar to an android or because he was deemed worthy.
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.
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.
Colossus' ability to wield Mjolnir shows that he is pure of heart and ultimately good, despite recent actions calling into question his integrity. Colossus' heroic nature is evident in his willingness to sacrifice himself for others, as seen in the Legacy Virus storyline.
Thanos can't lift Mjolnir… usually. The parameters for “worthiness” in Mjolnir's enchantment are rather vaguely defined, people tend to debate a lot about what exactly constitutes someone as “worthy”.
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.
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 Man of Steel then stated that the Asgardian was the single toughest opponent he had ever faced in battle. While Thor is one of the mightiest gods in the Marvel Universe, he is still no match for the unparalleled power of Superman. However, even the Man of Steel admitted that Thor could be almost at his same level.
