The plot might involve Percy trying to bring peace between Poseidon and Athena. There could be some ancient feud between them that Percy is determined to end. He could start by finding common ground between the two deities in their respective domains, like the sea and wisdom. Along the way, he would face many obstacles, including other gods and goddesses who don't want the peace to happen.
A great plot could be Percy getting caught in a power struggle between Athena and Poseidon's followers. Since he is the son of both, he is a symbol of unity or a threat, depending on how different groups view him. He could be forced to prove his loyalty to both sides while also trying to maintain peace among them. This could involve battles, political intrigue, and lots of character development as he tries to figure out where he truly belongs in this complex world of gods and their followers.
His relationships with other demigods would be very complex. For example, the children of Poseidon might see him as an oddity at first. They are used to their own set of powers and Percy having Athena's influence could make them a bit wary. On the other hand, the children of Athena might be skeptical of his loyalty as he also has Poseidon as a father. However, some demigods might be in awe of his unique heritage and look up to him, hoping to learn from his dual nature.
His character would likely be a blend of Athena's wisdom and Poseidon's boldness. He'd be more calculating in his actions, thinking several steps ahead like Athena, but also not afraid to take risks when necessary, similar to Poseidon. He might have a natural inclination towards both strategy and brute force, which could make him a very unpredictable and powerful character.
One interesting fanfic could be where Percy has to deal with the complex politics of having two powerful parents. He might struggle to find his place among the demigods who have more traditional parentage. For example, some might be jealous of his unique heritage, while others might fear his potential power.
Well, it would first of all bring two very different aspects of Greek mythology together. Percy represents the more heroic, chaotic side of Poseidon's descendants. Artemis is all about the hunt, chastity, and the moon. Their union in a fanfic could create new power dynamics. For instance, new magical abilities might be created from their combined influence. Maybe there could be a new form of magic related to water and the moon.
One possibility could be a story where Percy and Artemis have to team up for a quest. Maybe there's a new threat to the world of the gods and their combined powers are needed. Percy's skills as a son of Poseidon in controlling water and Artemis's archery and connection with the moon could be crucial in defeating this new evil.
One possible plot could be Percy's struggle to balance his two powerful heritages. He might face challenges from both the forces of Chaos and the underwater world of Poseidon. For example, the denizens of the deep might be wary of his Chaos side, seeing it as a threat to their ordered underwater society. Meanwhile, the chaotic entities could try to pull him fully into their realm, away from his connection to Poseidon.
His powers could develop in a very unique way. Since he has the blood of Chaos, his powers might start off as small, random bursts of energy. For example, he might accidentally create small pockets of chaotic space. As he learns to control his Poseidon powers, like controlling water, he could start to merge the two. He might be able to make the water act in chaotic ways, like creating whirlpools that have unpredictable movements.
Yes, there are many great ones. You can start by looking on fanfiction websites like Archive of Our Own. Some focus on Percy's new adventures that draw on his unique heritage as the son of both Poseidon and Neptune, exploring how he might handle different mythological challenges.