Well, it could be really exciting. Maybe the Avengers have to deal with some vampire - related threats that are similar to the ones in Twilight. For example, they might face a group of vampires who are after some powerful artifact. Iron Man could use his high - tech gadgets to detect the vampires' lair, while Captain America leads the fight against them. And the Twilight characters could bring in their knowledge of vampire lore to help the Avengers out.
In an 'avengers and twilight crossover fanfiction', it might start with the Avengers being called to a small town where strange disappearances are happening, which is later found out to be the work of vampires. The Twilight vampires like Edward could team up with the Avengers. Edward's ability to read minds could be useful in predicting the enemies' moves. The Avengers, on the other hand, would provide the muscle and strategic planning. Thor could use his hammer to take on the stronger vampires, and Black Widow could use her combat skills to fight the faster ones.
Another challenge is the fanbase. Both Twilight and Avengers have huge and passionate fanbases with different expectations. Some Twilight fans might not like how their beloved vampires and werewolves are portrayed when mixed with the Avengers, and vice versa. So, the writer has to be careful to please both sets of fans, or at least not completely alienate either group while creating this crossover story.
One great 'Twilight and Avengers crossover fanfiction' is 'Twilight's New Guardians'. It combines the vampire - werewolf world of Twilight with the superheroes of the Avengers in an interesting way. The story has Bella Swan somehow getting involved with the Avengers and her unique abilities from the Twilight universe play a role in their adventures.
I think it would be Loki. In this crossover, Loki could use his trickery to manipulate the Twilight vampires. He might see them as a new tool to achieve his goals. He could pretend to be on their side and then turn on them when it suits him. His magic and cunning would add a whole new level of chaos to the story.
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.
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.
Maybe Zelda herself could be transported to the Avengers universe. With her wisdom and magic, she could assist the Avengers in different ways. She could use her magic to heal the wounded Avengers or help Tony Stark understand some ancient technology that has similarities to her own world's tech. She could also provide strategic advice based on her experience dealing with Ganon in her own realm.
One great 'pjo avengers crossover fanfiction' is 'The Demigod Avengers'. It has an exciting plot where the demigods from Percy Jackson and the Olympians join forces with the Avengers. The character interactions are really well - written, like when Percy uses his water powers in a fight alongside Thor's lightning.
A common theme is teamwork. Since it's a crossover, different characters from different universes or groups have to work together. For example, in an Avengers and X - Men crossover, they need to combine their powers and strategies.
One idea could be that the Avengers are somehow transported to the wizarding world. They might be initially confused by the magic but then start to work with the Hogwarts students and teachers to fight a common enemy, like a dark wizard who has also harnessed some sort of Muggle - like technology to become even more powerful. For example, Voldemort could team up with Hydra remnants to create a super - weapon that threatens both the magical and non - magical worlds.
One interesting aspect could be how Spider - Man's agility and street - level skills blend with the Avengers' more high - powered abilities. For example, his web - slinging could provide a unique form of transportation or capture for the team during a big battle against a powerful villain like Thanos. He could also use his spider - sense to detect threats that the other Avengers might miss.