Well, Percy himself is always a memorable character. His courage and quick - thinking in the face of magical challenges make him stand out. Also, any new characters that are created in the fanfiction, like a powerful wizard who mentors Percy in the ways of magic, could be very memorable.
There could be a character who is a half - human, half - magical creature. This character has the ability to communicate with all magical beings, which makes them very important in the story. Their backstory, like how they came to be and their struggle to fit in both the human and magical world, would make them a memorable character. They might also have a complex relationship with Percy, either as a rival or an ally depending on the situation.
One of the most intriguing characters is Annabeth. In the context of Percy being the champion of Mars, Annabeth could be in a tough situation. She might be worried about Percy changing because of his new role and she has to figure out how to support him while also dealing with her own feelings. Another interesting character could be Grover. Grover's role as a satyr might bring in some unique elements. He could be the one who discovers some hidden lore about Percy's connection to Mars that no one else knew.
Percy himself is always interesting. In fanfics, he might be even more complex as a champion. Another interesting character could be Annabeth. In some champion - related fanfics, she could be the strategist behind Percy's success as a champion. And then there's Nico. His dark powers and his own journey could intersect with Percy's in interesting ways in these fanfics when Percy is in his champion role.
Percy Jackson himself is always a memorable character. His courage and loyalty are his trademarks. In this fanfiction, his interactions with the twelve masters would likely highlight these traits even more as he faces new challenges.
Nico di Angelo is quite popular too. His dark and mysterious nature, along with his unique powers related to the underworld, makes him an interesting character to write about. Fanfiction might focus on his backstory or his interactions with other characters in new and unexpected ways.
Since it's about Percy Jackson being the champion of the Pit, he's the main focus. However, in the Percy Jackson universe, his relationships are important. So Annabeth could be a major character, perhaps helping Percy strategize or solve problems in the Pit. Grover, with his knowledge of nature and the wild, might also be involved, using his skills to assist Percy. Additionally, there could be antagonists like some powerful monsters or maybe a rival champion vying for the same position or goal as Percy within the Pit.
The main character is Percy Jackson for sure. However, depending on the creativity of the fanfiction writer, there could be a whole host of other characters. We might see some ancient beings from the very origins of chaos. There could be other demigods from different cabins at Camp Half - Blood that we haven't seen much of in the original series but play important roles here. And don't forget about the villains. There could be new antagonists who are trying to either take advantage of the chaos or stop Percy from fulfilling his role as the champion of chaos. Annabeth would most likely be there to provide her intelligence and strategic thinking to Percy's more impulsive nature.
Annabeth is a very likely ally. Their relationship is so strong that she would follow him into Tartarus and be by his side through thick and thin. Grover could also be an ally. He's Percy's long - time friend and his skills as a satyr could come in handy in Tartarus. Nico di Angelo is another possibility. His knowledge of the Underworld and his powers over the dead could be useful in the dangerous Tartarus environment.
Percy is the central character, of course. Besides him, characters like Chiron, the centaur who has always been a mentor to Percy and the other demigods, could play a role. Artemis, the goddess of the hunt, is likely to be involved as Percy is the champion of the hunt. Her hunters, like Thalia, could also be common characters. There might also be some new characters created by the fanfiction authors, perhaps other demigods with special hunting abilities or mythical creatures that Percy encounters during his hunts.
One interesting plot could be Percy having to face a new and powerful magical enemy that is immune to his usual water - based powers. So he has to quickly learn and master new forms of magic to defeat it.
Well, Annabeth would definitely be one. She's always been by Percy's side, and in this fanfiction, she might be a bit worried about Percy being the champion of Nyx. She could be trying to help him while also being cautious of Nyx's motives.