In some fanfiction, a cool plotline could be Percy going on a quest specifically related to Hestia's domain. Maybe he has to find an ancient relic that was once part of Hestia's hearth in order to restore balance to the world. This could involve facing off against new monsters and making alliances with unexpected characters. Also, his relationships with the gods could change. As the son of Hestia, the gods might view him differently, and he could have to navigate new political landscapes among the Olympians.
A possible plotline is Percy being sent to a different realm by Hestia to learn more about his heritage. There, he meets other beings who are also connected to the concept of the hearth in their own cultures. He could learn new forms of magic or combat techniques. This journey could also be a self - discovery one, where he realizes the true extent of his powers and his role not just as a demigod, but as the son of Hestia, which might be more important than he initially thought.
One possible plotline could be the child of Hestia having a special ability to control and manipulate fire in a unique way compared to other demigods. For example, they might be able to create fire that has a calming effect on others, which could be useful in tense situations. Another plotline could involve the character's relationship with the other demigods. Since Hestia is the goddess of the hearth, the child might be like a home - like presence at Camp Half - Blood, always trying to bring a sense of family and unity among the often - bickering demigods.
One interesting plotline could be Percy having to team up with Cerberus in some way. Maybe there's a threat to the Underworld that only they can stop together. Another could be Percy exploring his new 'son of Cerberus' identity and how it affects his relationships with his friends at Camp Half - Blood. For example, some might be scared or distrustful of him at first.
One interesting plotline could be Percy having to deal with new powers inherited from Diana. For example, he might have an enhanced connection to nature and animals, which could lead to adventures where he has to communicate with forest spirits to save his friends. Another plotline could involve Percy facing off against a new set of enemies who are specifically targeting him because of his relation to Diana. These enemies might be ancient foes of Diana's that now see Percy as a threat to their plans.
One interesting plotline could be Percy's struggle with his new identity as the 'Son of the Devil'. He might have to face internal conflicts about his nature. For example, he could be torn between his heroic instincts and the dark powers he may inherit.
One interesting plotline could be Percy having to deal with the complex powers and expectations that come with being the 'Son of the Fates'. Maybe he has visions of different possible futures and has to figure out how to navigate them to save his friends and the world. Another could be his interactions with other demigods who are either in awe or afraid of his new status.
Another plotline might be Percy struggling with the expectations that come with being the 'son of fate'. He could be constantly under pressure from the gods or other powerful beings, and he has to find a way to balance his own desires and the greater good. For example, he might be forced to make difficult choices between saving his friends and fulfilling his fated duties, which would add a great deal of internal conflict to the story.
One interesting plotline could be Percy's struggle with the chaotic nature of being the 'Son of Eris'. He might constantly find himself in the middle of conflicts that are not his own making, like battles between different groups in the demigod world. His powers could be a mix of his normal Percy abilities and some new chaotic powers from Eris, which would make for some cool action scenes as he tries to control them.
One interesting plotline could be Percy's struggle to balance his new identity as the son of Thetis with his existing loyalties in the Camp Half - Blood world. He might face challenges from his friends who are suspicious of Thetis' motives.
A possible plotline is Percy's struggle to control his chaotic powers. Since Chaos is such a powerful and unpredictable force, Percy may have to learn how to harness his abilities without losing himself. He could go on a quest to find a way to balance his powers, and during this journey, he discovers more about the true nature of Chaos and his place in this new world.
A possible plotline is Percy teaming up with the descendants of Daedalus. Together, they could work on a project to create a powerful defense for Camp Half - Blood. They might face opposition from other characters who are suspicious of Daedalus' legacy, thinking that his creations could be too dangerous. Percy would then have to convince them that the benefits outweigh the risks.