Maybe the Avengers are shrunk down to the size of ponies and end up in Equestria. They have to adapt to the new world and its rules. Iron Man could try to build new tech using Equestrian resources, and Captain America could use his leadership skills to form an alliance with the ponies against a common threat, like a dark magic - based enemy that wants to take over both worlds.
Twilight Sparkle and Tony Stark would be an interesting pairing. Twilight is a brilliant magic user and a scholar, and Tony is a genius inventor. They could exchange knowledge, with Twilight teaching Tony about magic and Tony showing Twilight his high - tech gadgets. They might also bicker a bit over whose knowledge is more useful in a given situation.
Once upon a time, Mario found himself in the magical world of MLP. He was quite confused at first, with all the colorful ponies and floating castles. But being the brave hero he is, he decided to explore. He met Twilight Sparkle, who was intrigued by this strange new being. Mario showed her his jumping skills, and Twilight was amazed. They then went on an adventure together to find a way to send Mario back to his world, facing all kinds of challenges along the way, from evil magic spells to tricky terrains.
In some fanfics, the Hulk might befriend Fluttershy. It's an unexpected pairing but it works. Fluttershy's gentle nature could potentially calm the Hulk down when he's angry. And the Avengers would be introduced to the magic of Equestria, like the Elements of Harmony which could be a key factor in defeating a common enemy.
One idea could be that Godzilla is drawn to the energy source of one of the Avengers' tech, like Stark's Arc Reactor. This causes chaos as Godzilla approaches the city where the Avengers are based. The Avengers initially see Godzilla as a threat and try to fight it. But then they realize that an even bigger alien force is using Godzilla's presence as a distraction. So, they have to find a way to communicate with Godzilla and work together to defeat the common enemy.
One idea could be that Nightwing is transported to the Avengers' universe through some sort of interdimensional rift. He then has to team up with the Avengers to fight a common enemy, like Thanos who has somehow acquired some of Batman's tech. Nightwing's acrobatic skills and detective abilities would be a great addition to the Avengers' power set.
Well, 'mlp crossover fanfiction' is basically when fans take the My Little Pony (MLP) universe and cross it over with another. For example, they might combine it with a popular movie like 'Star Wars'. It allows fans to be creative and put their favorite MLP characters in new and exciting scenarios with elements from different franchises. This can lead to really interesting stories where the magic of MLP meets the space battles of 'Star Wars' or the mystery of a detective story.
I really like 'The Avengers in Equestria' which is a part of 'mlp fim crossover fanfiction'. It has the Avengers characters somehow transported to the world of My Little Pony. It's full of action and also shows how the ponies and the superheroes deal with their differences and work together. It's a fun read for fans of both franchises.
One idea could be that Spider - Gwen somehow gets transported to the Avengers' universe. Maybe Doctor Strange's magic goes awry during an experiment. She could team up with Black Widow, sharing her acrobatic skills and they take on a group of villains together. It would be a cool dynamic as Gwen is more of a street - level hero while the Avengers often deal with bigger threats.
There's also 'When Descendants Join the Avengers'. This fanfiction focuses on how the Descendants integrate into the Avengers' daily operations. It shows their growth as they learn from the more experienced Avengers. Characters like Carlos become more confident as he takes on tasks with Iron Man, and it's really heart - warming to see their relationships develop.