Imagine that in the Resh umbrella world, there is a powerful weapon that could potentially destroy the entire multiverse if it falls into the wrong hands. The Avengers are somehow alerted to this threat. They cross over into the Resh umbrella world. There, they meet characters from Resh umbrella who have different motives. Some want to use the weapon for power, while others want to destroy it. The Avengers have to navigate this complex situation, make allies among the Resh umbrella characters, and ultimately prevent the weapon from being misused.
One idea could be to have characters from different universes meet under the Resh umbrella. For example, a character from a fantasy world and a character from a sci - fi world could find themselves taking shelter under the same Resh umbrella during a strange interdimensional storm.
The characters from Resh umbrella might be initially in awe of the superpowers of the Avengers. For example, Iron Man's high - tech suit would be a wonder to them. Meanwhile, the Avengers might be a bit cautious of the Resh umbrella characters as they come from a more shadowy and secretive organization. But they would soon realize that they have to work together and start sharing their skills and knowledge.
Begin with brainstorming the significance of the Resh umbrella in your fanfiction. Is it a magical item? A technological wonder? Once you've determined that, think about the characters from different stories you want to bring together. Sketch out a basic plot where the umbrella acts as the catalyst for their meeting. For example, if you're doing a crossover between a post - apocalyptic world and a magical realm, the umbrella could be the key to opening a portal between the two desolate and fantastical places.
Well, it could start with some sort of interdimensional rift that sucks members from both groups into a shared space. The Avengers would be all about order and protecting the world in a more traditional heroic way, while the Umbrella Academy is a bit more dysfunctional. So, there'd be a lot of bickering at first. But when they realize they're up against a powerful alien force or something, they'd start to work together. Like Vanya's powerful sound waves combined with Thor's lightning could be a really cool combo.
One possible plot could be that Oliver Queen gets transported to the Avengers' universe. He teams up with Hawkeye, sharing their archery skills and combat tactics. They could go on a mission to stop a new threat that combines the technology of the Arrowverse and the super - powered enemies of the Avengers.
A cool plot might be that the Tailed Beasts in the Naruto world are being targeted by an unknown force from the Marvel universe. The Avengers, thinking it could lead to a greater threat to both universes, come to help. Naruto and the Avengers have to work together to protect the Tailed Beasts. Hulk could have an interesting interaction with the Tailed Beasts, perhaps learning from them how to better control his rage, while the ninjas are amazed by Thor's lightning powers and try to incorporate some of that into their own jutsu.
Perhaps the Joker discovers a way to mind - control some of the Avengers. He targets Hulk first, making him go on a rampage in a major city. The other Avengers are caught off - guard. They soon realize it's the Joker's doing. Spider - Man, who has recently joined the Avengers, swings in to help. He uses his agility to dodge the Hulk's attacks and tries to figure out a way to break the mind - control. Doctor Strange is called in to use his magic to counter the Joker's mind - games, and the team must fight both the controlled Avengers and the Joker's minions to save the day.
Well, perhaps a powerful and mysterious new threat emerges that neither the Punisher nor the Avengers can handle alone. The Punisher has his street - level combat skills and no - holds - barred attitude, while the Avengers have their superpowers and teamwork. They are forced to team up. During the mission, the Punisher has to deal with the Avengers' more heroic and less lethal approach, which causes some friction at first but eventually they find a middle ground to defeat the enemy.
A great plot in this crossover fanfiction might be that an ancient threat from both universes resurfaces. In the HTTYD world, it could be an even more powerful and evil version of the Red Death. In the Avengers' universe, it could be a new group of super - villains. The Avengers and the HTTYD characters then have to combine their skills. The dragons could be used to transport the Avengers quickly across the HTTYD landscapes, and the Avengers could teach the Vikings about modern combat strategies.
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.