Perhaps it could be about a character from Westworld, like Dolores, suddenly having magic abilities similar to those in the Harry Potter universe. She could use her new - found magic to break free from her pre - programmed destiny in Westworld and explore the wider magical world, with Hogwarts as her destination to learn more about magic.
Definitely Harry Potter himself. His courage and magic skills would make him stand out in the world of Westworld. He could use spells to solve the mysteries and challenges there.
One great 'Harry Potter Westworld fanfic' could be one where the characters from Harry Potter are transported into the Westworld universe. They might have to figure out the rules of this new world full of hosts and hidden agendas. Another interesting one could be where the technology of Westworld is introduced to the wizarding world, causing all kinds of chaos and new opportunities for magic - related problem - solving.
The concept of free will is often explored in a unique way. In the Harry Potter universe, characters have their own destinies influenced by magic and prophecy. In Westworld, the hosts are starting to discover their free will. When combined in fanfic, it can lead to really thought - provoking scenarios where characters from both universes question what it means to be truly free.
Perhaps it would focus on the clash of cultures. The wizards in Harry Potter have their own set of rules and ethics, while Artemis Fowl operates in a more scientific and criminal - minded world. The story could explore how they deal with each other's differences while trying to achieve a common goal, like saving both their worlds from a mutual enemy.
One possible plot could be that the Halliwell sisters from 'Charmed' somehow get transported to the wizarding world of 'Harry Potter'. They could use their powers to help Harry and his friends in a battle against Voldemort. For example, Piper could freeze Death Eaters with her time - stopping power, while Phoebe could use her premonition power to foresee Voldemort's next moves.
One possible plot could be that Thor somehow gets transported to the wizarding world. He might initially be confused by the magic there as it's different from his Asgardian powers. Harry Potter and his friends could be intrigued by Thor and his hammer. They might team up to fight a common enemy, perhaps a dark wizard who has somehow got hold of some Asgardian artifact and is misusing its power.
One possible plot could be that Gordon Ramsay visits the Hogwarts kitchens. The house - elves are used to their traditional ways of cooking and are resistant to change. Ramsay tries to introduce modern muggle cooking techniques to them. For example, he might show them how to make a proper steak instead of just serving up mystery meat stew all the time. There could be chaos as the house - elves initially reject his ideas, but eventually come around when they see the students enjoying the new food.
Perhaps in the crossover, the Prototype virus could somehow infect the magical creatures in the Harry Potter universe. This would lead to a crisis where normal spells and magic can't stop the infected creatures. Harry and his friends would have to seek help from Mercer, who understands the virus. Together, they could try to find a way to either cure the infected or contain the spread. Mercer might use his own knowledge of the virus and his powers to fight the infected creatures, while Harry uses his magic skills to protect Mercer from magical attacks.
In a Harry Potter and Pitch Black crossover fanfic, there are so many possibilities. Harry and his friends could team up with the survivors in Pitch Black. The dementors from Harry Potter could be compared to some of the scarier creatures in Pitch Black. The magic wands could be a great advantage in a world where brute force and survival skills are the norm. The fanfic could explore how the values of the Harry Potter world, like friendship and courage, play out in the much darker and more desperate world of Pitch Black.
One possible plot could be that the One Ring somehow finds its way into the wizarding world. Harry and his friends discover it and realize its dark power. Meanwhile, some Hobbits from Middle - earth are accidentally transported to Hogwarts. They team up with the Hogwarts students to keep the Ring away from the dark wizards who want to use it for evil, just like Sauron in their world.