Well, I think characters that are associated with magic and mystery are popular. For example, the Weasley twins. Their mischievous nature and their love for creating magical items could lead to some really fun scenarios in Skyrim. They could be creating new magical items using Skyrim's resources. Also, characters like Voldemort can be used in a really interesting way. His power - hungry nature could be a great contrast to Skyrim's heroes, and his dark magic could be a new threat in the Skyrim world.
In many fanfictions, the Dragonborn from Skyrim becomes a popular character in this crossover. When combined with the world of Harry Potter, the Dragonborn's abilities like Shouts can be a new form of magic in the wizarding world. Also, characters like Severus Snape can be really interesting in this crossover. His complex personality and his skills in potions and the Dark Arts can add a lot of depth to the stories set in both worlds. Luna Lovegood is another popular one. Her unique perspective on magic can bring a fresh take to Skyrim's magic - based adventures.
Lydia is often a popular character in Skyrim reincarnation fanfiction. Her loyalty in the original game makes her an interesting candidate for reincarnation stories. Fans might explore what would happen if she was reincarnated with different abilities or a different role in Skyrim's society.
Ichigo is often a popular crossover character. His strong and determined personality, along with his powerful spiritual abilities, make him stand out. He can easily interact with the more action - oriented parts of the 'Harry Potter' world, like dueling dark wizards or exploring dangerous magical places.
Hermione Granger could also be a popular character in this type of fanfiction. She is known for her intelligence and knowledge of magic. In a story with Aayla Secura, she could be the one who tries to understand the new elements from the Star Wars universe and find ways to incorporate them into their fight against any combined threats.
Definitely Harry Potter and Percy Jackson themselves. They are the main characters of their respective series, so it's natural for them to be popular in crossovers. Hermione from Harry Potter is also quite popular as she can bring her intelligence and magic skills to the crossover scenarios.
Harry and Naruto are often paired as they are both the main protagonists in their stories and share the 'chosen one' archetype. Hermione and Sakura are also popularly paired, as they are both intelligent and strong female characters. Another common pairing is Ron and Choji, perhaps because they both have a bit of a comical side and are loyal friends. Also, Dumbledore and the Third Hokage could be paired in some fanfics, as they are both wise leaders in their worlds.
Sirius Black is often very popular. His mysterious past and his connection to Harry make him a great character to explore in fanfiction. Hermione Granger is also popular as she is intelligent and her actions often drive the plot in the third book.
Harry himself is often very popular. Fanfiction writers like to explore his thoughts and feelings during the events of the second book more deeply. Hermione is also a favorite as she's so intelligent and resourceful. Writers might put her in situations where she uses her wits in new and exciting ways.
Luna Lovegood is beloved in fanfiction. Writers might create stories where she discovers new magical species or has unique adventures. Sirius Black is also very popular. Fan - created stories could be about his time as an Animagus, his relationship with James Potter and Remus Lupin, or his life on the run. Additionally, Ginny Weasley is often a key character in fanfictions, especially those dealing with her relationship with Harry and her own growth as a witch.
One popular trope is the 'fish out of water' story. A character from Harry Potter suddenly in Skyrim or vice versa, trying to figure out the new world's magic. Another is the power - up trope, where a character combines the magic of both worlds to become extremely powerful. For example, a Skyrim mage learning the Patronus charm and using it to fend off powerful enemies.
Definitely Dumbledore. His wisdom and powerful magic would be fascinating in the Skyrim setting. He could interact with the Greybeards and learn about their way of life. Harry himself would also be interesting as he could use his Gryffindor courage to face the challenges in Skyrim, like the dragons. And Hagrid would be great too. He could bond with the giants in Skyrim.