Percy is the obvious main character. There could be his friends from previous adventures who accompany him to the camp. Additionally, there might be a villain in the story who is misusing the fish blood. This villain would be an important character as they would drive the conflict in the fanfiction. There could also be some local creatures at the camp that are affected by the fish blood and they could be important characters as well.
Well, in this fanfiction, perhaps Percy goes to the camp and has to deal with some sort of danger that is related to the fish blood. It could be that there is a curse on the camp that is activated by the fish blood, and Percy has to find a way to break it. He might meet new friends or face old enemies during this adventure at the camp.
Some of the Roman gods or goddesses might also play important roles as characters. They could interact with Percy in different ways compared to how they interact with the Roman demigods in the camp. For instance, if Jupiter shows up, he might have different expectations of Percy compared to Poseidon, Percy's father in Greek mythology.
He could meet some of the older campers who usually don't interact with the new arrivals right away. They might give him some special advice or warnings about the camp.
I think Tyson would be an excellent character to include. He's Percy's half - brother and his strength as a Cyclops could be very useful in various situations. His innocence and loyalty also make him a lovable character. Additionally, Clarisse could be paired with them. She has a tough exterior but deep down she's a strong and capable demigod. Her rivalry - turned - friendship with Percy could add some spice to the fanfiction. And of course, Chiron, the centaur, could be involved. His wisdom and guidance are always valuable and could play a crucial role in their adventures.
The betrayal of Percy by Camp Half - Blood in fanfiction can also be a way to show Percy's growth and resilience. He has to face the ones he considered family turning against him. This can lead to some really interesting character development arcs, where Percy has to re - evaluate his loyalties and find new allies or even learn to rely more on his own strength.
Well, in this fanfiction, Percy might meet some new characters early at the camp. Maybe he discovers a hidden part of the camp that others don't know about yet.
In this fanfiction, Percy is the main one in control. But characters like Chiron, the centaur mentor, would also play a significant role. Chiron has a wealth of knowledge and experience, and Percy would likely rely on him for advice on matters of the camp's history and traditions. Also, there could be some antagonist characters within the camp who don't like Percy's new rules and ways of controlling, which would add some conflict and drama to the story.
Well, he might start showing off his ninja skills during the camp's training sessions. Maybe he'd befriend some of the demigods there easily because of his friendly nature.
In fanfiction, if Percy hurts Flash, it could be due to Flash's constant bullying. Percy, being a demigod, has powers and a short temper at times. Flash might push him too far, and Percy could accidentally use his powers, like controlling water to trip Flash or something. It would be a moment of self - defense for Percy, and it could lead to a lot of drama in the Camp Half - Blood setting, with other campers having to take sides or deal with the consequences of such an incident.
Maybe he hates it because it often misrepresents the real Camp Half - Blood or his friends. Fanfictions sometimes take wild liberties with the characters and settings, and Percy might not like how his world is being distorted.