Well, it could be about the oc - now a wolf - exploring the Pokemon world. Maybe it teams up with certain Pokemon, using its wolf instincts to survive and find its place in this new world full of trainers and wild Pokemon.
The plot might involve the wolf - oc trying to figure out if it has any special abilities related to being a reincarnation. It could start by living in the wild, observing Pokemon behaviors, and then gradually get involved in the human - Pokemon interaction. For example, it might help a lost Pokemon find its trainer or vice versa. It could also face challenges from other wild Pokemon or even some not - so - nice trainers who see it as a threat.
It might interact in a very instinctual way at first. Since it's a wolf, it could communicate through body language and certain growls or howls that Pokemon might understand. For example, it could warn a group of Pidgey about an approaching predator (another Pokemon).
In this kind of fanfiction, aside from the OC, you'll often see other young trainers. They could be traveling companions or just other kids starting their Pokemon adventures. Legendary Pokemon might also make an appearance. For example, Mewtwo could be involved, either as a friend or a foe to the OC, depending on the story's direction. There might also be a Team Rocket - like group causing trouble for the OC and other characters in the Pokemon world.
In 'oc reincarnated as a pokemon fanfiction', a great plot could be the OC getting involved in a mystery within the Pokemon world. They might discover a hidden power or a secret organization. Their reincarnation could be tied to this mystery, like they were reincarnated to stop an evil plot. Along the way, they'd make friends with different Pokemon and trainers, and their relationships would develop as they try to solve the mystery.
One idea could be that the oc retains some memories of their past life. So they use their knowledge to change things in the pjs world. For example, they might know of a coming danger and work to prevent it.
Well, it could be about an original character starting their journey in a new Pokemon region. They might encounter rare Pokemon, make new friends along the way, and face off against a powerful villain team that's up to no good in the region.
One common plot element is the protagonist using the system to gain unique advantages. For example, they might be able to quickly level up their Pokemon or unlock rare abilities. Another is the exploration of the Pokemon world from a different perspective due to their reincarnation. They could form unexpected alliances with Pokemon or other trainers. Also, often there is a struggle against powerful foes that the system helps them to overcome in creative ways.
Maybe the reincarnated character starts off as a weak Pokemon but has memories of Kasumi's training techniques. They then use these memories to train themselves in a very unorthodox way for a Pokemon. This attracts Kasumi's attention and she decides to take the Pokemon under her wing. As they journey together, they face various challenges that test their bond and the character's newfound Pokemon skills.
One common plot device is the protagonist having unique abilities from their past life. For example, they might have knowledge of advanced fighting techniques that don't exist in the RWBY world yet. Another is the struggle to fit into the new world while still holding onto their old self. They may find it hard to adjust to the different social norms and combat styles. Also, the discovery of new relationships that are influenced by their reincarnated state. They could form unexpected alliances or rivalries because of their different perspective.
Another plot point might be the relationships the reincarnated OC forms. They could have a different dynamic with Ash's friends like Brock and Misty. The OC might introduce new ideas or ways of thinking to the group, which could lead to some really fun and unexpected adventures.
The reincarnated OC might also change the relationships between the main characters. For example, they could become a close friend to Harry Potter and influence his decisions in a different way. They might introduce new ways of thinking about magic that make the other characters question their own beliefs and practices. This could lead to a whole new dynamic within the group and change the course of the story in unexpected ways.