Another theme is the alteration of reality. The Infinity Gauntlet can change reality, and in crossovers, this often leads to strange and unexpected situations. For instance, characters from one universe might find themselves in a completely different world due to the gauntlet's power, and they have to adapt. This theme adds a lot of intrigue and adventure to the fanfictions. Also, moral dilemmas are common. Characters have to decide whether to use the gauntlet's power for good or evil, and this internal struggle makes for some really interesting storylines.
There's also 'Infinity Gauntlet and the Justice League Crossover'. In this fanfic, the Infinity Gauntlet somehow finds its way into the DC universe and the heroes of the Justice League have to deal with its power. It's a really exciting read as it combines the powers and dynamics of two very different superhero universes.
In a Batman Infinity Gauntlet fanfiction, Batman would face a moral dilemma. The power of the gauntlet is immense and corrupting. He would have to struggle with whether to use it for what he believes is the greater good or to resist its allure completely. He could also encounter other powerful beings from the DC universe who either want to take the gauntlet from him or help him control its power.
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.
In this fanfic scenario, the Infinity Gauntlet could also attract the attention of the White Walkers. If they got hold of it, they could use it to spread their icy grip across all of Westeros and beyond. They might use the Space Stone to teleport their armies, or the Time Stone to reverse the defeats they've suffered, making them an even greater threat to the living.
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.
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.