In Percy Jackson father fanfiction, the sea god Triton could be an antagonist. He might be jealous of Percy getting so much attention from Poseidon. The primordial sea gods or goddesses could also be antagonists. They might see Poseidon's relationship with a half - blood as a perversion of the natural order. And then there are always the minor gods who might feel that Percy and Poseidon are getting too much power and try to undermine them.
There could also be a situation where Naruto is like a father figure to the younger demigods. He could comfort them when they are homesick or feeling down. He would share stories from his own life in the ninja world, which could inspire the demigods to be brave and persevere in the dangerous world of Percy Jackson.
Well, if Percy is the father of Zoe in fanfiction, it might mean that there are some hidden powers or abilities that Zoe could inherit from Percy. This could be a major plot point. Also, their relationship could be full of emotional turmoil. Percy, being the protective father, would have to deal with all the dangerous situations that Zoe gets into, just like he does with his other friends in the original stories.
Well, in this fanfiction, it could be that the author wanted to explore a different side of Percy's character. Being the 'Father of the Primordials' might mean he has the power to shape the very essence of the world in this fictional universe. It might also lead to some really interesting plot twists, like how he interacts with the existing gods and demigods, and how they react to his new - found status. It could also introduce new enemies or allies based on his role as the progenitor of the primordials.
One idea could be that Percy discovers he has a long - lost connection to Thalia. Maybe in a magical twist, a prophecy reveals that he is fated to be like a father figure to her. He could then use his powers and experience to train Thalia, much like Chiron trained him.
In a fanfiction, Percy could become Annabeth's father in a magical realm where the rules of family and time are distorted. Maybe a powerful god or goddess messes with their destinies. Percy would then have to navigate the new relationship while still dealing with his own heroic duties. He might struggle to balance protecting her as a father and respecting her as an independent demigod who is used to taking care of herself.
Annabeth could be the mother. Since she and Percy have a strong relationship in the original series, it's very likely that in a fanfiction they would have a child together. Their combined intelligence and Percy's powers would make for an interesting genetic combination for their child.
Another possibility is Hephaestus. Since he was Aphrodite's husband in the original mythology. In the fanfiction, their relationship could have taken an unexpected turn leading to the pregnancy. This could also add a layer of drama as Hephaestus might be overjoyed while Aphrodite could have mixed feelings due to her complex nature.
One great Percy Jackson father fanfic is 'A Father's Redemption'. It delves into Poseidon's struggle to be a better father to Percy. The author really captures the essence of their relationship and adds some interesting twists to the original story.
In most of the Percy Jackson canon, Poseidon is Percy's father, and Athena has no relation to Percy in that way. But in fanfiction, anything can be reimagined. Maybe a powerful magic or a strange prophecy could be the reason. It could be a completely new take on the mythology, where the author decides to break the normal rules and create a unique scenario for Percy to be in such an unexpected role.