There could also be Annabeth. She is often Percy's companion and her intelligence and strategic thinking would play an important role in the fanfic. She might be helping Percy solve problems or face challenges.
Well, Percy is surely one of the main characters. He is likely to be the central figure around which the story revolves. He has his unique powers and personality that drive the plot forward.
Maybe there's a plotline where Percy discovers a long - lost relative who has some crucial information about his past or his powers. This could lead to a whole new adventure as he tries to piece together the mystery. For example, this relative could be from a forgotten branch of his family tree that has a special connection to an ancient power source in the Olympian world.
Obviously Percy would be one of the main characters. There might also be other characters from the Percy Jackson series like Annabeth. Maybe the gods of Olympus would also be important characters as they are the ones whose home, Olympus, is being destroyed.
A young demi - god who looks up to Percy and wants to be his apprentice. This character could bring some new energy and naivete to the story, and Percy would have to take on a mentoring role.
Obviously, Percy would be one of the main characters. And probably the Olympian gods like Zeus, Poseidon, Athena etc. would also play important roles as he is raised in their domain.
Grover might also be an ally. His connection to nature could be useful in Percy's new role. For example, he could help Percy understand any nature - related aspects of Olympus or deal with nature spirits in the realm. Also, some of the more benevolent gods like Poseidon (Percy's father) and Athena (Annabeth's mother) might side with Percy, at least to some extent, as they have their own interests in seeing Percy succeed in maintaining order in Olympus.
Well, Percy is obviously one of the main characters. Since it's about him growing up on Olympus. Annabeth might also be a major character as she has a close relationship with Percy. She could be visiting him on Olympus or they could be having some long - distance communication that affects the story.
There might also be some of the gods as main characters. For example, Poseidon, Percy's father. He could be involved in protecting Percy and guiding him in the new setting of Olympus, while also dealing with his own affairs among the other gods.
Percy Jackson himself is likely one of the most important. He's the hero of the Percy Jackson series, and in this fanfic related to the Bane of Olympus, he would probably be at the center of the action, using his powers and wits to combat the threat.
A possible new character could be an oracle - like figure who is not from the traditional Delphi but is a seer on Olympus. This character could give Percy cryptic prophecies that are related to the future of Olympus and the demigod world. There might also be a group of centaurs who are specifically trained to protect Percy and serve as his advisors, different from the ones at Camp Half - Blood.
There could also be some ancient monsters or spirits that are tied to Olympus' existence. They might rise up to defend it because their own survival is linked to the continued existence of Olympus. These could be powerful beings that Percy has never faced before, adding an extra layer of danger to his quest to destroy Olympus.