A sucubus familiar could be a magical being from a far - off and dark corner of the wizarding world. It could be that a powerful and unorthodox wizard has managed to bind it as a familiar. In the Harry Potter universe, it might be seen as a very dangerous and controversial choice. For example, Dumbledore might be extremely cautious about it, while some dark wizards might be envious and try to steal it.
A Quetzalcoatl as a familiar in the 'Harry Potter' fanfiction universe would bring in a whole new cultural aspect. The creature has strong ties to Mesoamerican mythology. It could interact with the magic of Hogwarts in interesting ways. For example, its connection to the sun in its native mythology might translate into some sort of light - based magic within the 'Harry Potter' context. It could also have a special bond with Harry that goes beyond the normal familiar - wizard relationship, perhaps due to its more ancient and powerful nature.
One possible plot could be a young wizard accidentally summons a sucubus as a familiar. The sucubus, instead of being purely malevolent, has her own motives and secrets. She could help the wizard in his adventures at Hogwarts while also causing some chaos due to her nature. For example, she might use her charm to get out of tricky situations or to get information from other students or teachers, but this also gets the wizard into some trouble with the school authorities.
Shukaku could be a powerful magical beast that has been sleeping deep within the grounds of Hogwarts for centuries. Only a very powerful spell or a unique combination of spells could awaken it. Once awakened, it could either be a great ally or a terrifying foe depending on how the wizarding community treats it.
She could be a powerful ally. Since Bella has enhanced physical abilities in her own story, in the Harry Potter universe, she could use those to help in battles. For instance, she could be part of the Order of the Phoenix and use her speed and strength to fight against Voldemort's forces.
Django could be a new student at Hogwarts who has some sort of special ability that comes from his non - magical background. For instance, his skills in marksmanship could translate into a unique form of spell - casting accuracy.
In fanfiction, gargoyles could be ancient magical beings that were created by a powerful wizard in the past. In the Harry Potter universe, they could hold the key to some long - forgotten magic. Harry Potter might stumble upon this when exploring the castle. They could be like living puzzles that Harry has to figure out in order to unlock their secrets and gain their help.
Riolu can fit in as a magical creature. It could be a creature that has been hidden in the wizarding world for ages and is now discovered by a Hogwarts student. For instance, it might live in the Room of Requirement, which has all sorts of hidden things. The student could then form a bond with Riolu and they embark on adventures together.
A priest could be a healer in the wizarding world. Just as priests in real life are often associated with providing spiritual and sometimes physical comfort, in the 'Harry Potter' universe, he could use his religious knowledge along with magic to heal the sick or injured wizards. For example, he might say prayers while using a spell to soothe a patient's mind and body.
They might be a time - traveler as well. The Doctor Master could go back in time to the days when the founders of Hogwarts were alive. They could influence the development of magic in the wizarding world, perhaps by introducing new ideas about the relationship between magic and nature. This could have a ripple effect on the events that occur in Harry Potter's time, like creating new spells or magical artifacts that are based on their unique perspective.
She could be a long - lost relative of one of the existing characters. For example, if she's related to Hermione, it could bring a new dynamic to their friendship with Harry. They could all study together and share knowledge in a different way.