What are some interesting plot ideas for 'Percy Jackson and OC fanfiction'?

One idea could be that the OC is a new camper at Camp Half - Blood. She has a special power that Percy is intrigued by. They start off as friends, helping each other in various quests. As time goes on, they realize their feelings for each other during a particularly dangerous quest where they have to rely on each other completely.

One interesting plot idea could be her struggling with the stigma associated with being Hades' daughter. For example, other demigods might be scared or distrustful of her at first. Another could be her going on a quest related to the Underworld, like trying to stop some escaped souls from causing chaos on Earth. She could also have a special power related to the dead that she has to learn to control, such as being able to see the last moments of a dead person's life, which could be both a gift and a curse as she might see some really traumatic things.

A possible plot for this fanfiction could be that the Son of Thor is on a quest to retrieve a powerful artifact that has been lost in the world of Percy Jackson. Along the way, he teams up with various characters. He might have to deal with the cultural differences between the Norse and Greek ways. For example, the way they approach magic or combat. His interactions with other demigods could be filled with misunderstandings at first, but as they journey together, they come to understand and rely on each other. This could also lead to some interesting crossovers in powers and strategies.

A possible plot is that the reborn female OC starts to form a different kind of relationship with the existing characters. Since she's female, her friendship with Annabeth could be more of a sisterly bond where they support each other in different ways compared to Percy and Annabeth's relationship. And she might have a romantic sub - plot with a new character, someone who was not really in the spotlight in the original series. This new relationship could be shaped by her unique identity as a reborn character.

One idea could be that the fem oc is a new camper at Camp Half - Blood with a unique power related to nature. She and Percy have to go on a quest together to save a forest that is being poisoned by a mysterious force. Along the way, they discover that their powers work better together and start to develop feelings for each other.

A great plot could also involve the OC forming an unlikely alliance. He could team up with some of Percy Jackson's friends, like Annabeth. They initially don't trust him, but as they face challenges together, they realize that he's not like his father. This alliance could lead to them facing off against an ancient evil that only the combined knowledge and powers of the OC and the other demigods can defeat.

One idea could be that the male OC was a great hero in a past life. In his reincarnation, he starts having strange dreams about his past deeds. As he gets closer to the world of Percy Jackson, he discovers that his past life has some connection to an ancient prophecy that only he can fulfill. Maybe he has some latent powers from his past that start to emerge, like the ability to control a unique element that was thought to be lost in time.

Another interesting concept is an SI OC who is from a different time period, like the Middle Ages. They would have to adapt to the modern world of Percy Jackson while also using their archaic knowledge and skills to their advantage. Maybe they know ancient battle tactics that are useful against the Titans or Giants. They could also introduce medieval weaponry and fighting styles to Camp Half - Blood.

An interesting concept for a Percy Jackson God OC fanfiction could be an OC who was created by the gods as an experiment. This OC would have powers that are a combination of different gods' powers, but they are also an outcast among both gods and demigods because of their origin. They might struggle to find their place in the world and go on a journey to discover who they really are and what their purpose is. Along the way, they could form unlikely alliances with both demigods and minor gods who also feel like outsiders.

One idea could be an OC with the power to control water in unique ways, like creating ice sculptures that can come to life. Another could be an OC who has the magic to communicate with mythical animals and use them as allies. Maybe an OC with magic that allows them to manipulate time on a small scale, like freezing time for a few seconds during a battle.