Yes he can, he not only welded DC'S version of Mjolnir but also Marvel's Mjolnir. While later on in the story he couldn't do it, it was later retconned in Jane's Mighty Thor run that Superman is worthy.
However, after the battle, Superman attempts to lift Mjolnir again, but is unable to shift it. Thor then explains that Odin (who was observing the battle) made an exception for Superman, so they could be victorious. This then proves that while Superman did briefly wield the hammer, he certainly isn't worthy.
No. Thor's hammer is extremely durable. We've seen Superman hit with things before that didn't break. The only way I see a fight with Thor & Superman ending with Mjolnir broken is if Superman punched it as hard as he could while Thor was swinging it as hard as he could.
Surprisingly, the answer is almost certainly, “No.” Although Batman's will and moral compass do make him a worthy candidate for Thor's hammer, his track record with super powers is less than stellar. In several storylines, Batman has acquired genuine superpowers but frequently becomes corrupted by them.
Moon Knight also has the ability to lift Mjolnir as it is made from Uru, a metal ore from the moon of a dead universe. So, with the help of Khonshu's influence, Moon Knight has the ability to control the hammer. Two DC Comics characters have lifted Mjolnir in Marvel/DC crossover events: Wonder Woman.
So, while Dragon Ball's Goku could lift Thor's hammer, Mjolnir, the same nobility and fighting spirit that make him worthy would likely mean he'd instead focus on pushing his limits and find a way to win without it.
Even so, taking both heroes at their maximum potential, it's practically a given that Superman would overpower Thor in terms of sheer physical strength. He may not consider himself a god, but the Last Son of Krypton can still outmatch the God of Thunder on his best day.
If Marvel fans have ever wondered if Spider-Man was worthy of lifting Thor's hammer, the answer is yes. Just NOT the Spider-Man you think… Although he didn't really meet Thor beyond a couple shared scenes in Avenger's Endgame, Spider-Man has shown he's actually a big fan of the Thunder God.
The Hulk might not be worthy of Mjolnir, but in his latest battle against Thor, he just found a way to move the God of Thunder's hammer. In Hulk vs. Thor: Banner of War Alpha #1 by Marvel Comics, Thor and the Hulk's ultimate fight begins.
Is Thanos able to lift Mjolnir? No he didn't. He caught Stormbreaker, which, as far as we know, simply requires a great amount of power to wield, far more power than any human has, but presumably power that Thanos has. He never once lifts Mjolnir.
To summarize, the most powerful heroes in DC Comics will always out-muscle the most powerful ones from Marvel, and the most powerful hero in DC (Superman) will always lose to Dragon Ball's most powerful hero (Goku) simply because, at this point, Dragon Ball's power cap is beyond human comprehension.
The more he is exposed to the sun of Earth's solar system or any other like it, the stronger Superman becomes, even at one point becoming so powerful that he shattered an entire dimension with a single punch. However, at his base strength, Superman is nowhere near strong enough to break Captain America's shield.
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.
He has feats such as defeating Surtur (who can destroy a planet), conquering the 9 realms, and sealing away Hela. While there isn't much doubt that Thanos could beat Odin if he had all 6 stones, Odin could probably defeat Thanos if he only had one or two of them.
As mighty as they are, neither Thanos nor Superman is immortal. Both have been killed in the past, meaning neither is unbeatable. However, Thanos would need an ironclad plan to trap and defeat the Man of Steel, because if it comes down to plain old fisticuffs, Superman is definitely going to win.
Make-believe metal is kind of hard to weigh. But then, in 1991, Marvel released a "Thor's Hammer" trading card that claims that Mjolnir weighs precisely 42.3 pounds. Yet, using the dimensions and weight on Marvel's trading card, it's estimated that the density of Mjolnir is about 2.13 grams per cubic centimeter.
Cap was deemed worthy in endgame, that is why he was able to hold mjolnir. Pay attention to what you're watching! Odin placed a worthiness enchantment on Mjolnir in the first Thor film, allowing only those who are worthy to lift it and possess the power of Thor.
Avengers #36 reveals the Black Panthers have always been worthy to wield Mjolnir - since before Thor Odinson was even born! This article contains spoilers for Avengers #36.
He might seem like a lightweight compared to other superheroes, but Spider-Man has shown he can be stronger than Thor - multiple times. When it comes to super strength, Spider-Man often ranks fairly low compared to powerhouses like Thor and Hulk.
But some of his variants had much better luck at corralling the rest of the world's heroes. One version of Spider-Man 2099 stands above the others, however, eventually becoming a vital savior to his entire timeline. As a result, he was able to even become worthy enough to lift Mjolnir, Thor's enchanted hammer.
Thor also has tanked hits from Odin, who is far stronger than anyone Goku has ever faced. Wiz: Thor is also far smarter than Goku, and has fought opponents similar to Goku like Hulk or Sentry, and considering that Thor is able to damage Galactus, he could easily damage or kill Goku too.
In a battle between Batman and Thor, considering the vast gap in their powers and abilities, Thor would likely emerge as the victor. Thor's godly strength, control over lightning, and durability put him in a league beyond that of a mortal like Batman.
