Connect their existence to the existing lore of the Percy Jackson universe. Maybe their parent is a minor god or goddess that hasn't been explored much. Their powers and abilities should fit within the framework of what we know about demigods and the magical world in Percy Jackson. For example, if their parent is the god of dreams, they might have the ability to enter and manipulate people's dreams.
A believable character also needs to have a goal. In a Percy Jackson Hellsing fanfiction, a character could have the goal of finding a way to combine the powers or knowledge from both worlds. For instance, a demigod might want to learn the secrets of the Hellsing organization's vampire - slaying techniques to use against more powerful Greek monsters. Their actions and decisions throughout the fanfiction should be driven by this goal, which makes them more three - dimensional and believable.
First, give your character a clear backstory. If they're an SI OC, think about how they ended up in the Percy Jackson world. Were they summoned? Did they fall through a portal? Their backstory should tie into their personality. For example, if they had a tough life before arriving, they might be more cautious or distrustful at first. Also, consider their powers. Make sure they're not overpowered right away. If they have a water - related power, start with basic skills like being able to sense water nearby and gradually develop more complex abilities as the story progresses.
First, give the OC a distinct backstory from their past life. Explain how they died and what their life was like before reincarnation. This will help in shaping their current personality. Second, tie their reincarnation to the Percy Jackson lore. Maybe they were reincarnated because of a curse or a blessing from a god. Third, give them a believable set of powers. Don't make them too overpowered. For example, if they have a power related to water, show how it's different from Percy's power.
First, start with Percy being in denial about his new identity as the son of Arachne. Then gradually have him accept it as he discovers the good aspects of this heritage. For example, the power and loyalty of the Arachne - related demigods.
First, consider their background. If they're from a noble house, think about the family's history, values, and reputation. For example, a character from House Stark should have values like loyalty and honor. Second, give them a unique skill or trait. It could be something like an uncanny ability to read people's emotions. Also, think about their appearance. It should fit the world of Game of Thrones. For instance, if they're from Dorne, they might have darker skin and different fashion styles. Finally, their goals and motivations should be clear. Are they seeking power, revenge, or something else?" "Answer2": "To create a believable OC, start with their family. Where are they from? What kind of family environment did they grow up in? If they're from a poor family in Flea Bottom, they'll have different experiences compared to someone from a wealthy family in the Vale. Their relationships also matter. Who are their friends, enemies, or mentors? A character who has a mentor figure might be more polished and have different skills compared to one who has had to learn everything on their own. Their personality should be consistent too. If they're a shy person, it should show in their actions and decisions throughout the story.
One idea could be an original character who is a descendant of a minor Greek god. This character could have a unique power related to that god, like the ability to control the winds if they're related to Aeolus. They could start at Camp Half - Blood and struggle to fit in because their power is so different from the more common ones.
Let the characters grow and change through their interactions. If Harry and Percy become friends, Harry could learn about Percy's world and become more open - minded. Percy could also be influenced by Harry's sense of justice. This development in their relationship would make their interactions more engaging and believable.
These fanfictions can have a profound impact on Percy's character. Since he's experimented on, his sense of self - worth can be shattered. He may no longer believe in his own abilities as he's constantly being poked and prodded and made to feel like a specimen. His view of the world around him can change. Instead of seeing it as a place full of adventure and mystery like in the original stories, he may start to see it as a cruel place where he's at the mercy of those who want to use him. His relationships may become strained not only with his friends but also with his family, as he may feel ashamed or unworthy. All in all, the fanfictions can transform Percy into a much more complex and damaged version of the original character.
First, give your character a detailed backstory. Think about their family, where they grew up, and what kind of magical upbringing they had. For example, if they're from a pure - blood family, how has that influenced them? Second, give them unique traits. It could be a strange quirk like being able to talk to portraits in a special way. And finally, make sure their actions and decisions are in line with their character. If they're a shy person, they probably won't be the first to volunteer for a dangerous mission.