One possible fanfiction could be about the Princess having a secret alliance with Poseidon. Maybe she was promised power in exchange for helping him against Kratos. However, as the story unfolds, she realizes the true nature of Poseidon's brutality and has a change of heart, ultimately choosing to side with the forces of good instead.
Another scenario could be that the princess is from a land that both the God of War and Poseidon have an interest in. The God of War wants to conquer it, while Poseidon wants to keep it as a neutral zone. The princess then becomes the key figure in this conflict. She might form an alliance with other powerful beings or use her own wits and courage to save her land from destruction.
One way to approach a God of War 3 Poseidon princess fanfic is to consider her backstory. She could be a princess who was once in a privileged position but now has to face the consequences of the fall of Poseidon. Her story could be one of survival and redemption. In the fanfic, she might have to make difficult choices, like whether to side with the remaining gods or try to find her own path. This would make for an interesting character arc, especially if it intersects with the main events of God of War 3 in unexpected ways.
Perhaps the princess is a peacemaker. In a world where the God of War is constantly causing unrest and Poseidon is often at odds with other gods, she tries to broker a peace deal. But her efforts are seen as a threat by the God of War, who wants chaos. Poseidon, on the other hand, starts to respect the princess and decides to help her in her mission, leading to a series of adventures and confrontations.
Another aspect of developing the plot is to consider the power dynamics. The Poseidon princess likely has certain powers related to the sea. She could use these powers to either help or hinder the progress of the story. For example, she might use her ability to create tidal waves to stop an approaching army. But this could also attract unwanted attention from other powerful entities. Also, think about the overarching goal of the story. Is it to restore Poseidon's glory? Or is it something more personal for the princess, like finding a lost relic of her father's? This will shape the entire plot of the fanfic.
A simple plot could be that the Princess is a sea nymph in love with Poseidon. But Poseidon's war - mongering ways put their relationship at risk. She tries to convince him to stop his aggression in the God of War 3 universe, but he is too consumed by his desire for power and dominance.
Well, first of all, there's Triton, his son. Triton was like his father in some ways as he also had a connection to the sea. Then there's Amphitrite, Poseidon's wife. She was a sea - goddess. And, as mentioned before, Athena was very much related in the story of the competition for Athens. Also, his many children, like Polyphemus the cyclops, are important characters in relation to him as they were part of his story of having numerous offspring.
Amphitrite is very important. She is Poseidon's wife. Their relationship is crucial as it gives context to Poseidon's family and his role as a married god in the mythological world.
In 'Poseidon the First Stories', there might be stories about his relationships. He has many affairs and children. His relationship with Amphitrite is a significant part. He had to court her, and their union led to various other stories, like the birth of some of his important children who had their own roles in Greek mythology.
You can try websites like Archive of Our Own (AO3). It has a large collection of fanfictions across various fandoms, including those related to Poseidon. Just use the search function and type in 'Poseidon' to find relevant stories.