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.
He might find it in a hidden chamber in Hogwarts. Maybe it was left there by a powerful wizard from long ago who had some connection to other universes.
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.
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.
He would probably become extremely powerful. He could use the Infinity Stones' powers to defeat Voldemort in an instant. For example, the Power Stone could enhance his magic to an unimaginable level, and the Time Stone might allow him to go back and prevent bad things from happening in the wizarding world.
He could gain the power to control time, which would be really useful in the wizarding world. He could go back and prevent some of the bad things that happened, like the death of his parents.
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.
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.
Dumbledore. He has the wisdom and experience to handle the immense power of the Infinity Gauntlet. He could use it to restore balance in the wizarding world in ways that others might not think of. For example, he could use it to heal the long - standing divides between different wizarding communities, like the pure - bloods and the Muggle - borns, in a more permanent way.