What are some interesting ideas for Harry Potter OC fanfiction?

Maybe the aunt is a half - blood who has a foot in both the Muggle and wizarding worlds. She could be an artist who uses magic in her art, creating paintings that come to life. In fanfiction, she could help Harry see that there are different ways to use magic beyond just spells for combat or everyday tasks, and she could also be a source of comfort during his tough times at Hogwarts.

A cool Harry Potter OC Crossover Fanfiction idea could be to have an OC crossover with the world of Middle - earth. Imagine an OC from Hogwarts traveling to Middle - earth and using their magic to help in the battles against Sauron. They could introduce wands and spells to the hobbits and elves. Also, a crossover with the world of Fairy Tail would be interesting. The OC could join the Fairy Tail guild and participate in their quests while also showing off the unique magic of the Harry Potter universe. And a crossover with the world of Howl's Moving Castle could be fun too. The OC could interact with Howl and Sophie and learn about their form of magic which is different from Hogwarts magic.

Another plot could be that the OC is an outcast in the wizarding world due to their unorthodox magical abilities. They see Harry as a kindred spirit. When they adopt him, they take him on a journey to discover the true nature of magic, which is different from what is taught at Hogwarts. This could involve exploring hidden magical realms and learning from magical creatures that are not well - known in the wizarding community.

One idea could be that the OC is a transfer student from a far - off magic school. The harem could consist of characters from different houses. For example, Hermione could be attracted to the OC's vast knowledge of ancient magic that he or she learned from their original school. Ginny might be drawn to the OC's brave and adventurous spirit, similar to Harry's. And Luna could be interested in the OC's unique view of the magical world, which is different from Hogwarts' norm.

Well, a great plot idea could be that the mermaid OC has the power to communicate with magical creatures that live in the lake and around Hogwarts. When some strange and dangerous creatures start to act up, she warns Harry Potter. They then team up to figure out what is causing the creatures to behave this way. Maybe it has something to do with a dark spell cast by Voldemort's followers. Or perhaps the mermaid OC falls in love with a Hogwarts student, and they have to face the challenges of a relationship between a mermaid and a human - like in the classic mermaid tales, but with a Harry Potter twist.

A possible plot is that the Gaunt OC is an outcast within the family due to their different views on magic. They believe in a more inclusive form of magic that accepts all wizards and witches regardless of blood purity. So, they run away from the Gaunt family and end up at Hogwarts. There, they face discrimination from some Slytherins who know of their family name, but they find friends among the other houses and together they try to change the perception of blood purity at Hogwarts.

One idea could be a male oc who is a transfer student from a different wizarding school. He has unique magical abilities that are rare in Hogwarts, like the ability to communicate with magical creatures on a deeper level. This could lead to him helping Hagrid with some of the more dangerous creatures and getting into all sorts of adventures around the Forbidden Forest.

One idea could be creating an OC (original character) who is a foreign exchange student at Hogwarts during the Triwizard Tournament. This character could bring unique magical traditions from their own school or country, and get involved in the events of the Goblet of Fire in unexpected ways.

One idea could be that the OC is a foreign exchange student who has unique magical abilities unknown to Hogwarts. They could help Harry in the Triwizard Tournament tasks in unexpected ways, like using ancient spells from their home country.

One idea could be an SI (self - insert) who has the power to manipulate time enters the Harry Potter world. They could use their power to prevent certain tragedies, like Sirius's death. Another could be an OC (original character) with the ability to communicate with magical creatures. They team up with Harry and friends to uncover a plot that involves the Forbidden Forest's creatures being used by dark wizards. And an SI who is a master of potions from a different magical world comes to Hogwarts and starts creating new and powerful potions that help in the fight against Voldemort.