One interesting plot idea could be Percy having to deal with the conflicting natures of his 'parents'. Since Gaia represents the earth and Poseidon the sea, he might struggle with controlling both earth - related and sea - related powers. For example, when he's near a beach, he could accidentally cause small earthquakes or make strange things happen to the sea life. Another plot could involve Percy facing a threat that only his unique dual - heritage can defeat. Maybe an ancient evil that is both of the land and the sea, and Percy has to figure out how to combine his powers in a new way to stop it.
His relationship with Annabeth would likely be more complex. She might be initially worried about the new powers Percy has from Gaia. There could be some jealousy or fear that he's becoming too different. With his friends from Camp Half - Blood, some might look up to him more because of his even greater potential, while others could be intimidated. His relationship with the Poseidon cabin would also be different. They might see him as more of an enigma now that he has this additional connection to Gaia.
In most traditional Percy Jackson lore, he is the son of Poseidon. However, in fanfiction, authors can create all kinds of alternate universes. So, it's possible for him to be depicted as the son of Gaia and Tartarus in some fan - created stories.
There's also a fanfic called 'Poseidon's Promise'. In this one, Percy has to deal with a mysterious prophecy related to his father. The story is full of twists and turns. It delves deeper into the relationship between Percy and Poseidon, which is really interesting to read about. It also has some great action scenes with Percy using his water - based powers.
One idea could be Percy feeling betrayed by Poseidon and then finding a new family among other outcasts in the demigod world. He could form a group with them and go on adventures that are not related to Poseidon at all.
Percy Jackson is the main focus, of course. However, in fanfiction, we often see the introduction of characters from different mythologies. So, there could be characters from Roman mythology interacting with Percy. Additionally, there might be some minor characters from the original Percy Jackson series who get more development in the fanfiction. For instance, Nico di Angelo could have a bigger role, maybe helping Percy understand his new powers as the Son of Gaia, or even having some sort of power struggle with him.
In fanfiction, their relationship could be developed by having Poseidon be more involved in Percy's daily life. Instead of just popping in during big events, he could be there for the small things too. For instance, helping Percy with his schoolwork that involves marine biology. They could also have a project together like building a new safe haven for sea nymphs. Through this, they would bond over creating something positive. Also, Percy could start to take on some of Poseidon's responsibilities in the ocean, with Poseidon guiding him. This would not only strengthen their bond but also show Percy growing into his role as Poseidon's son.
In some fanfictions, Percy being the son of Chaos and Poseidon is a really cool concept. It often gives him even more power. He might be able to control not just water like a son of Poseidon but also have some chaotic powers. For example, he could disrupt the order of things in a battle, or create portals to different realms which are abilities not typically associated with a normal demigod.
Yes, there are quite a few. You can start by looking on fanfiction websites like Archive of Our Own or FanFiction.net. Some might explore Percy's unique heritage as the son of both Gaea and Poseidon and how it affects his relationships with other characters in the Percy Jackson universe, like his friends at Camp Half - Blood or his enemies.
One interesting plotline could be Percy having to face off against new and powerful monsters sent by Gaia. Maybe he discovers some hidden powers within himself to combat them. Another could be Percy forming an unexpected alliance with a group of demigods who were once his enemies but are now united against a greater threat from Gaia. And he might also have to journey to some long - forgotten places related to Gaia to stop her evil plans.