There's a fanfiction called 'Percy's Hidden Powers in Son of Neptune'. In this one, Percy discovers new powers that are unique to the events in 'Son of Neptune'. The author does a great job of tying it in with the existing mythology and the plot of the original story. It's full of action and some really cool fight scenes.
The 'Percy Jackson Son of Neptune Graphic Novel' is centered around Percy's journey. Since he is the son of Neptune, he has unique abilities. In the story, he might be on a quest to save the world or a particular part of it. He'll face all sorts of foes, from ancient Greek monsters to other forces that oppose him. The graphic novel format makes it even more exciting as it brings the story to life visually, with vivid illustrations of the characters and the mythical settings.
One idea could be Percy forming an unexpected alliance with a minor Roman god. In the fanfiction, this god could have a unique power that helps Percy in his quests. For example, a god of illusions who can create decoys to mislead Percy's enemies.
A character like a demigod with the power to control time could be really interesting. This character could be from a minor god's lineage. They could use their power to help Percy in battle, for example, by freezing time for the enemies while Percy attacks.
The popularity comes from the love for the original Percy Jackson series. Fans want more of the story. 'Son of Neptune' has a rich world and great characters. Fanfictions allow people to explore different scenarios and relationships that they wished were in the original book.
Perhaps Percy would feel a sense of pride. Knowing that his story has inspired others to create their own versions shows that his adventures have had an impact. He might also be a bit surprised at some of the wild ideas that fans come up with, but overall, it could be a positive experience for him.
A really interesting plot would be if Percy was transported to a parallel universe where the roles of the Greek and Roman gods were reversed. He would have to adapt quickly to this new world, make new friends, and fight against the enemies who now have different motives and powers. It would be a great opportunity for character development and exploring different mythologies.
A lesser - known but very engaging 'Percy Jackson Neptune fanfiction' is 'Under Neptune's Gaze'. It focuses on Percy's time spent in an underwater realm under Neptune's watchful eye. The story delves deep into the relationship between Percy and the god of the sea, exploring themes of trust, power, and destiny. The descriptions of the underwater world are vivid and make you feel like you're actually there with Percy.
The main character is Percy Jackson. Since he is the son of Neptune, he's at the center of the story. However, in the Percy Jackson universe, there are often other important characters. It's possible that Hazel Levesque, a character from Camp Jupiter, could be in it as she has her own connection to the Roman side of the mythology which ties in with Neptune. Also, Frank Zhang, another Camp Jupiter demigod, might be a part of the story. They could be Percy's allies or play important roles in the events that unfold in the graphic novel.
A mermaid - centaur hybrid could be a really cool new character. This character could have the upper body of a centaur and the lower body of a mermaid. They could be an expert in both land and sea magic, and help Percy on his quests. They might also have a mysterious past that is related to the ancient wars between the gods.