One idea could be an OC who is a trainer from a far - off land coming to the well - known Pokemon regions to compete in the Pokemon League. Their unique training methods and the relationships they form with their Pokemon can be a great focus. For example, their OC might use music to soothe and train their Pokemon, which is something not commonly seen in the regular Pokemon world.
One idea could be that the OC is a new trainer who meets Dawn during a Pokemon tournament. They initially compete against each other but then realize they can learn a lot from one another. Another could be that the OC has a special connection with a rare Pokemon that Dawn is researching, and they team up to understand it better.
One plot idea could be that Ash's OC partner has a unique ability to communicate with legendary Pokemon. This ability draws the attention of Team Rocket, who try to capture the OC to use their power for evil. Another idea is that the OC is from a far - off region and has a different approach to Pokemon training, which challenges Ash's traditional methods and they learn from each other. A third idea could be that the OC has a mysterious past related to a powerful and lost Pokemon species, and Ash and the OC embark on a journey to discover the truth about it.
One idea could be that the OC is a new trainer in the Pokemon world and Serena helps them learn the ropes. For example, Serena could teach the OC about different Pokemon types and how to strategize in battles. Another plot could involve the OC having a special ability that Serena discovers, and they embark on a journey to understand and control this ability together. Maybe the OC can communicate with a rare type of Pokemon, and Serena is intrigued by this.
One idea could be that the OC is a new trainer who arrives in Misty's town. They have a unique type of Pokemon that Misty has never seen before, and she becomes intrigued. As they interact, they go on adventures together, facing challenges that test their skills and friendship, like dealing with a group of wild, powerful Pokemon that are causing trouble in the area.
One idea could be creating an OC that is a hybrid of two different Pokemon types. For example, a half - water, half - electric type with unique abilities. Another idea is to make an OC that has a special bond with a legendary Pokemon, perhaps they are the chosen one to help the legendary in a time of crisis. Also, you could have an OC from a different region with a completely new set of Pokemon not seen before in the main series.
One idea could be to create an OC that has a unique typing combination not commonly seen, like a Ghost/Grass type. This could lead to interesting storylines in the fanfiction, such as how they interact with other Pokemon and trainers. Another idea is to give the OC a special ability that sets them apart. For example, an ability that allows it to communicate with wild Pokemon more effectively, which could be useful in various fanfiction scenarios.
One idea could be an OC who is a trainer from another region but gets stranded in Alola and has to adapt to the unique Pokemon and culture there. They could start a journey to find a way back home while also uncovering the secrets of Alola's Pokemon.
Another interesting OC could be a Pokemon gamer who is also a scientist. They create a new type of Pokeball that has special abilities. In the fanfiction, they could face challenges from other trainers who want to steal this invention, while also using it to catch rare and powerful Pokemon. This OC's journey would be about not only collecting Pokemon but also protecting their scientific discovery.
Well, you could have an OC that is a Pokemon breeder with a special talent for breeding rare and powerful Pokemon. This OC could be on a quest to find the perfect combination of Pokemon in the XY region to create a new and unique species. Or, an OC who is a Pokemon ranger but with a twist - they can transform into a Pokemon - like form for a short time, which gives them an edge in protecting the wild Pokemon in the XY region. Also, an OC that's a Pokemon artist, who travels around the XY region painting pictures of different Pokemon. Their art has a magical effect on the Pokemon, making them stronger or more friendly.
You could write an OC fanfiction where the OC is a Pokemon scientist in the Insurgence world. They are researching a new form of Pokemon evolution that has been triggered by the strange events in the game. The OC could face challenges like lack of resources, opposition from other Pokemon communities, and the danger of the evolving Pokemon going out of control. This would allow for a lot of exploration of the scientific aspects as well as the social and political ones in the Insurgence universe.