One common theme is power and responsibility. Just like in the main Marvel stories, when Iron Man has the Infinity Gauntlet, he has to decide how to use such incredible power. Another theme is redemption. Sometimes Iron Man uses the gauntlet to fix his past mistakes.
Iron Man has wielded the Infinity Gauntlet in the comics. But it's not a consistent occurrence throughout all comic iterations and often depends on the plot and creative direction of the particular comic run.
Sure. One great Iron Man Infinity Gauntlet fanfiction is 'The Gauntlet's New Master' which shows Iron Man's unique take on using the Infinity Gauntlet. He tries to use it for the betterment of Earth in a very different way compared to Thanos.
In some fanfiction, Spider - Man might obtain the Infinity Gauntlet through a stroke of luck. Maybe it just falls into his hands during a battle in an alien - invaded New York. Another way could be that he is chosen by some powerful cosmic entity to be the wielder of the gauntlet for a specific purpose, like restoring balance to the universe.
He might use it to save his city from all kinds of threats. He could snap his fingers and make all the bad guys disappear, like the Green Goblin and Doctor Octopus. He's a hero, so he'd probably use it for good.
If Spider - Man has the Infinity Gauntlet in fanfiction, he would likely use it to protect his loved ones first. He could use the Soul Stone to ensure the safety of Mary Jane, Ned, and Aunt May. His approach to using the gauntlet would probably be different from someone like Thanos. Spider - Man is all about protecting the little guy, so he'd focus on using the power for the benefit of ordinary people. He might even use the Stones to improve living conditions in the city, like using the Power Stone to generate clean energy for everyone.
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.
Spider-Man was not one of the characters who died in the Infinity Gauntlet comics. The story had its own set of casualties, but he wasn't among them. The plot was complex and full of surprises, but Spider-Man made it through.
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.