The crossovers that involve the characters' relationships are also quite popular. Picture Rose Hathaway from Vampire Academy and Hermione Granger from Harry Potter becoming friends. They are both strong - willed and intelligent female characters. Their interactions could be really interesting, like Hermione helping Rose with her academic studies in the wizarding world, while Rose teaches Hermione some self - defense skills.
One of the most popular crossovers might be those that focus on the magical elements. Since both Vampire Academy and Harry Potter have their own unique magical systems, a crossover could explore how the dhampirs and Moroi from Vampire Academy would interact with Hogwarts students. For example, a story could be about a dhampir enrolling in Hogwarts for some reason, and the chaos and friendships that would ensue.
Harry Potter himself is often a popular character in these crossovers. Writers like to imagine how he would react to the Pokemon world. He might be intrigued by the concept of Pokemon training and try to incorporate some of the Pokemon's abilities into his fight against Voldemort.
Definitely Iron Man and Harry Potter. Iron Man's cool gadgets and snarky personality combined with Harry's magical abilities and heroic nature make them a great pair in crossovers.
Harry Potter himself is quite popular. His status as the Boy Who Lived gives him a certain allure in the crossovers. Fans like to imagine how he would handle the different threats in the Shadowhunter world. Clary Fray is also a favorite. Her journey as a Shadowhunter, especially her discovery of her powers, can be paralleled with Harry's discovery of his wizarding abilities. And when they interact, it can lead to some really engaging storylines.
There are also fanfictions where Emma Frost becomes a teacher at Hogwarts. This allows for all kinds of interesting interactions with the students and other faculty members. For example, she could teach a new subject related to mental magic or self - defense that draws on her own experiences. Her modern - day and mutant - influenced teaching methods would likely be a big hit among the more curious students like Hermione and Luna.
Tsukune from Rosario Vampire and Harry Potter would be an interesting crossover. Tsukune is a human in a world full of vampires and other supernatural beings. If he were to meet Harry, he could learn a lot about a different kind of magic and how to use it to his advantage in his own world. Also, Harry could learn about Tsukune's tenacity in dealing with the challenges in his world.
Hermione Granger is often a popular character in these crossovers. Her intelligence and magical knowledge make her adaptable in the Legend of Korra world. She could study the bending arts and come up with new strategies.
One popular crossover is where characters from Fairy Tail end up at Hogwarts. For example, Natsu could be a new student, and his fire magic would cause quite a stir among the Hogwarts students. Another is Hermione getting involved with Fairy Tail's quests, using her intelligence to help the guild.
One interesting crossover could be the use of magic from Harry Potter in the Umbrella Academy's world. For example, characters from the Umbrella Academy might discover the existence of wands and spells and try to incorporate them into their fight against villains. Another aspect could be the Hogwarts houses and how the characters from the Umbrella Academy would be sorted. Five, with his intelligence and strategic thinking, might fit well in Ravenclaw.
One popular trope is the 'character swap'. For example, having Harry Potter end up in the 'Vampire Diaries' world and having to deal with the vampire politics there. It's interesting to see how his Gryffindor courage plays out in a different setting. Another is the'magic - mix' trope where the magic from both universes combines in unexpected ways. Like using a spell to control a vampire or a vampire's blood having some sort of magical effect on a wizard.
The 'power - struggle' trope is also common. If Harry is a vampire, for instance, he has to deal with the power that comes with it and how it affects his standing in the wizarding world. There's also the 'mystery' trope, like when a series of strange events are linked to a vampire or werewolf character and Harry has to solve the mystery. This keeps the readers guessing.