Well, it could be about Percy finding the Infinity Gauntlet in the world of Greek mythology. Maybe he has to figure out how to use its power without being corrupted by it, all while facing off against some of the most powerful Greek monsters and gods who also want the gauntlet for their own purposes.
The plot might involve Percy Jackson being thrust into a situation where the Infinity Gauntlet is a key to saving both the mortal and the divine worlds. He could be tricked into putting on the gauntlet at first, and then struggle with the overwhelming power. His friends, like Annabeth, would try to help him control it. Meanwhile, new enemies emerge, attracted by the power of the gauntlet, and Percy has to find a way to either destroy it or use it for good without succumbing to its dark influence.
In a 'Percy Jackson Infinity Gauntlet' fanfiction, perhaps Percy teams up with his friends from Camp Half - Blood. They discover that the Infinity Gauntlet has somehow made its way into their realm. They then embark on a journey to keep it safe from the Titans and Giants who plan to use it to overthrow the Olympians. Along the way, Percy has to use his skills as a demigod and learn how to harness the power of the Infinity Stones in the gauntlet to protect his friends and the world of the gods.
A likely main villain could be Kronos. He's always been after power and the Infinity Gauntlet would be the ultimate tool for him to finally overthrow the Olympians and rule over everything. He could sense the power of the gauntlet and do whatever it takes to get his hands on it.
If Percy Jackson had the Infinity Gauntlet in fanfiction, it would completely change the power dynamics. He might use the Reality Stone to create illusions or change the nature of things around him. For example, he could turn the sea into a solid surface for his enemies to struggle on. And with the Power Stone, his physical strength would be off the charts, allowing him to take on even the mightiest of foes with ease.
Well, in this fanfiction, perhaps the Infinity Gauntlet is brought into the Naruto world by a mysterious portal. Naruto, being the curious and brave ninja he is, picks it up. He might initially struggle to control the stones' powers as they are different from chakra. But as he learns, he could use it to unite the shinobi clans in a way never seen before, like using the Time Stone to show the clans the history of their pointless feuds and convincing them to work together for a better future.
The plot might involve Harry accidentally stumbling upon the Infinity Gauntlet in the Room of Requirement. As he tries to figure out what it is, he discovers its immense power. However, the Ministry of Magic wants to use it for their own gain. Harry has to decide whether to keep it safe from the Ministry or use it himself to finally defeat all the dark forces that still lurk in the wizarding world.
One possible plot could be that the male reader is an ordinary person who suddenly finds himself in possession of the Infinity Gauntlet. He has to figure out how to control its power while being hunted by various powerful forces who want the gauntlet for themselves.
He'd be more confident. Having that much power at his fingertips would make him less hesitant in dangerous situations. He might become a bit more arrogant too, as the Infinity Gauntlet could easily go to one's head.
The plot might be that Spider - Man gets the Infinity Gauntlet in a different universe. In this universe, the rules are a bit different. He finds that when he uses the gauntlet, it gives him not only the power of the Stones but also some strange side - effects. For example, every time he uses the Mind Stone, he gets a vision of a future event that he doesn't fully understand. He uses the gauntlet to fight against an evil version of himself from another dimension who also wants the gauntlet for his own dark purposes. Along the way, he has to learn to control the gauntlet's power and also come to terms with the fact that using it might change him forever.
Well, in this fanfiction, the Joker could find out about Batman having the Infinity Gauntlet. He would then try to steal it, thinking he could create the most chaotic and hilarious situations. Batman would have to fight off the Joker while also dealing with the power of the gauntlet. Maybe the gauntlet gives Batman the ability to see into the Joker's mind and understand his madness better.
One possible plot could be that Naruto uses the Infinity Gauntlet to bring peace to the ninja world. He might snap his fingers and make all the hatred and grudges disappear. With the power of the Infinity Stones, he could also restore all the lives lost in the previous wars, like bringing back his parents and all the fallen shinobi. This would completely change the power dynamics in the Naruto universe and lead to a new era of unity among the different villages.
Well, if Percy Jackson had an Infinity Stone, he'd probably become an even more powerful demigod. He could use the stone's power to manipulate reality in ways that would give him an edge in his battles against monsters. Maybe he could even use it to protect Camp Half - Blood more effectively.