What could be an interesting plot for an 'Avengers Fantastic Four crossover fanfiction'?

Perhaps a reality - warping villain decides to merge the universes of the Fantastic Four and the Avengers in a chaotic way. Characters start to forget who they are and where they belong. Spider - Man, who is sometimes associated with the Avengers, teams up with the Fantastic Four to try and restore order. They have to travel through different dimensions that are now all jumbled together. The Fantastic Four's Human Torch could provide light and heat in the dark and cold dimensions they encounter, while Black Widow uses her combat and espionage skills to gather information about the villain's plans.

One possible plot could be that Doctor Doom teams up with some of Spider - Man's villains like Green Goblin. The Fantastic Four and Spider - Man have to put aside their differences and work together. Spider - Man's agility and quick thinking combined with the Fantastic Four's unique powers would make for some great action scenes. For example, Spider - Man could swing in and save Sue Storm when she's in trouble, and in return, the Human Torch could help Spider - Man by burning away some of the webs that his enemies have trapped him in.

One interesting pairing would be Reed Richards and Bruce Banner. Reed's scientific genius combined with Banner's knowledge of gamma radiation could lead to some amazing scientific breakthroughs while they're trying to solve a problem together. They could also have some great conversations about the risks and rewards of scientific experimentation.

Thor and the Thing would make a great pairing. Thor is a god with a hammer and the Thing is a big, strong rock - like guy. They could have some epic battles together against common enemies. And in between the fighting, Thor could be trying to understand the Thing's more down - to - earth view of things, while the Thing could be in awe of Thor's godly powers.

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.