Well, if Percy Jackson picked up Thor's hammer in a fanfic, it would be a really cool and unexpected turn. Percy is a demigod with his own set of powers from the Greek pantheon. Thor's hammer is a symbol of great power in the Norse mythology. Maybe Percy would gain some new abilities related to thunder and lightning, like Thor has. He could also face some challenges as the hammer might attract unwanted attention from both Greek and Norse mythological beings who would either be jealous or want to use him for their own purposes.
His relationship with Annabeth would likely become more complex. Annabeth might be both in awe and a little jealous of Percy being able to wield Thor's hammer. She might see him as even more of a hero but also worry that he's getting involved in something too big for them to handle together. With his other friends like Grover, Grover would probably be really excited and see Percy as even more of a protector. The other demigods at Camp Half - Blood might either look up to him more or be a bit intimidated.
Thor would probably be shocked at first. His hammer is something very personal and a symbol of his power and worthiness. But then he might see the potential in Spider - Man and be proud that someone else worthy has been able to wield it.
In such a fanfiction, perhaps Peter would gain new powers. Since only the worthy can lift Thor's hammer, it would show that Peter has a pure heart and noble character. He might use the power of the hammer to fight stronger enemies, like those that the Avengers alone couldn't defeat easily.
Well, in fanfiction, if Harry picks up Thor's hammer, he might gain the powers associated with it. He could suddenly have enhanced strength, the ability to control lightning to some extent, and be deemed worthy in the eyes of the Asgardian magic that governs the hammer. It would be a really cool twist as Harry comes from a world of magic already, and this would be like adding another layer of powerful magic to his repertoire.
In the fanfiction, if Naruto picks up Thor's hammer, he might gain some new powers related to Thor. Maybe he could control lightning like Thor does. Since Naruto is already powerful in his own right, this could make him nearly unstoppable. He could use the power of the hammer in his battles against powerful foes in the Naruto universe.
In fanfiction, if a human picks up Thor's hammer, it often gives them extraordinary powers. They might gain the ability to control lightning like Thor, or have enhanced strength and durability. It could also lead to them being recognized as a worthy hero, and they may be thrust into adventures in the realm of the Asgardians or on Earth, defending it from various threats.
The other Asgardians like Heimdall could also be present. Heimdall, with his all - seeing eyes, might be observing the human who has the hammer. He could play a role in guiding the human on how to use the power of the hammer properly or warn them of impending threats from Asgardian enemies.
A plot could involve Percy being sent to retrieve Thor's hammer as a favor to the Norse gods. He'd have to face many challenges on his way to the hammer, like battling Norse monsters that are guarding it. Once he gets there, he might find that the hammer has a mind of its own and tests Percy to see if he's worthy. This could be a great way to show Percy's growth as a character, as he'd have to rely on his wits and not just his powers. And in the end, he might either return the hammer or keep it for a while to use against a greater threat in the Percy Jackson universe.
One interesting scenario could be that when a human picks up Thor's hammer, they suddenly gain not only the physical strength associated with it but also a deep understanding of Asgardian culture. This might lead to the human trying to bridge the gap between Earth and Asgard in ways no one has thought of before.