Well, it could be about the characters from Glitchtale suddenly finding themselves in the X - Men universe. Maybe Frisk would be mistaken for a new mutant with their unique abilities. They'd have to learn to fit in with the X - Men while also trying to find a way back home. The X - Men, on the other hand, would be intrigued by the strange new arrivals and their different kind of magic - like powers.
Papyrus and Beast would also make for a great pairing. Papyrus is full of enthusiasm and always wants to do the right thing in Glitchtale. Beast is highly intelligent and has his own moral code. Papyrus could learn a lot from Beast's knowledge, and Beast could be inspired by Papyrus' unwavering optimism. They could work together on scientific projects in the X - Men's labs, with Papyrus bringing his unique perspective and Beast his scientific expertise.
The plot could involve the X - Men being transported to the world of Westeros. They would initially be confused by the different rules and power dynamics. But soon they would realize that there are threats here too, like the White Walkers. They could team up with some of the more honorable characters in Game of Thrones, like Jon Snow, to fight against the common enemy. Meanwhile, some of the power - hungry characters in Westeros might see the X - Men as a new source of power to be exploited.
It could be really exciting. Picture Naruto's ninja skills combined with the mutant powers in X - Men Evolution. Maybe Naruto could team up with Cyclops and use his Rasengan while Cyclops blasts enemies with his optic beam. They'd make a formidable duo against common foes.
The plot could involve a conspiracy that links the two universes. For example, an alien race in the Men in Black universe is somehow related to the creation or origin of the conduits in Infamous. So, the main characters from both sides have to team up to figure out what's really going on. Cole from Infamous and Agent J from Men in Black could be the main duo trying to solve this mystery.
One possible plot could be that the characters from Glitchtale end up in the world of Percy Jackson. Maybe Betty, from Glitchtale, could be mistaken for a new type of monster by the demigods. The demigods then have to figure out whether she's a threat or not. And at the same time, the Glitchtale characters are trying to find a way back to their own world.
One idea could be a crossover with Undertale. The characters from Glitchtale could interact with the original Undertale characters in a new and unexpected way. For example, Betty from Glitchtale could team up with Chara from Undertale for some sort of dark plan. Another plot could involve a crossover with a different game like Minecraft. The Glitchtale characters could find themselves in a blocky world, having to adapt to new rules and enemies. Maybe Sans from Glitchtale could use his powers in the Minecraft world in a really creative way.
One idea could be that the Glitchtale characters are transported to the Avengers' universe. Sans could use his shortcuts to surprise the Avengers, and Betty could be a powerful villain they have to face together. Maybe Papyrus befriends Thor because of their similar jovial natures.
In this fanfiction plot, Naruto and Supergirl could meet during a crisis situation. Let's say an interdimensional rift has opened and is causing chaos in Supergirl's city. Naruto, being used to strange situations, jumps right into action. Supergirl is impressed by his courage. Together, they could combine their abilities in unique ways. Naruto's Rasengan could be enhanced by Supergirl's super strength when she throws him towards the enemy. And Supergirl could learn some stealth and evasion techniques from Naruto.
In a Naruto x Lucifer crossover fanfiction, the plot could start with a rift opening between the Naruto universe and Lucifer's world. Naruto, always eager to explore and help, enters the new world. There, he meets Lucifer. Lucifer is initially skeptical of Naruto but soon realizes his strength. They could then form an alliance. Naruto could teach Lucifer about friendship and loyalty, while Lucifer could introduce Naruto to the darker aspects of power and how to navigate them. Their combined forces would be a force to be reckoned with against any threats to either world.
It would likely involve a lot of action - packed battles. The X - Men's superpowers like Cyclops' optic blasts and Jean Grey's telekinesis would blend well with Fairy Tail's magic. Maybe there could be a plot where the Fairy Tail guild gets wrongly accused of being a threat to the world, just like mutants are often seen as threats in the X - Men universe. So, the X - Men come to help clear their name while also fighting against other villains. Storm's weather - controlling abilities could create some really cool visual effects when combined with the magical spells of Fairy Tail characters.