One way to develop Percy is through his interactions with other characters. He could have confrontations with demigods who are suspicious of him. These interactions can force him to defend his existence and his right to be at Camp Half - Blood. At the same time, he could also have positive interactions with those who are more open - minded. This will show his ability to handle different types of relationships and grow as a character.
You can develop Medusa by exploring her backstory more. Maybe show how she was before she was cursed, her hopes and dreams. For example, she could have been a beautiful and kind - hearted maiden once. Also, give her some complex emotions like regret for the people she has turned to stone.
You can start by focusing on his internal conflict. Since Fenrir is a complex and often - feared figure, Percy would have a lot of self - doubt. He could question whether he's destined to be bad like his father is often portrayed.
He could be more brooding. Since Pluto is associated with the Underworld, Percy could have a darker, more introspective side. He might spend a lot of time thinking about the nature of death and the afterlife.
Developing his powers further is also a way. Since he's the son of Nyx, he could learn to manipulate different aspects of darkness like creating illusions using shadows or traveling through the dark realms faster. This would not only make him more powerful but also show his growth as a character as he masters these new abilities.
I'm not sure if there's a specific existing fanfiction exactly like this. However, it would be a very interesting concept. Naruto's ninja skills combined with the mythological elements of being the son of Medusa and in the world of Percy Jackson could lead to some really unique adventures. Maybe Naruto could use his shadow clone jutsu to outwit the monsters from Percy Jackson's world, while also having some sort of snake - related powers from his Medusa heritage.
Percy could be developed by showing his confusion at first. He's used to being a son of Poseidon, so being a son of Khione throws him off. He might struggle with learning new powers and how to use them effectively. For example, he accidentally freezes his own feet when he tries to use ice powers for the first time.
His powers can be developed. He could start with basic dream - entry skills and progress to more complex things like creating dream worlds. For instance, he could make a training ground in a dream for himself and his friends to practice combat skills without real - world risks. His relationship with other demigods could change. They might initially be wary of his Hypnos - related powers, thinking they are too unorthodox or dangerous. But as he proves himself useful, they come to respect him more.
To develop his character further, he could start to have visions or dreams related to Lycaon's past. These could be a source of both knowledge and inner turmoil. He could learn about the mistakes Lycaon made and be determined not to repeat them. At the same time, he might discover some long - lost powers or abilities that Lycaon had, and struggle to master them in a way that is true to his own character.
In fanfiction, their relationship might develop through a shared goal. Say there's a powerful magic item that both Percy and Medusa want. They have to work together to get it. Along the way, Percy learns about Medusa's past and the reasons she became what she is. Medusa, in turn, sees Percy's courage and determination, and they start to respect each other. This mutual respect could then turn into an unlikely friendship or at least a begrudging alliance.
The main character is Percy Jackson. Alongside him, we may have some characters that are exclusive to the fanfiction world. For example, there could be a character who is a half - human half - stone being as a result of Medusa's powers in the past. This character could be an ally or an enemy to Percy. Then there's a good chance that Chiron, the centaur trainer at Camp Half - Blood, will be in the story. He's always been a guiding figure for Percy, and in this new context, he'll have to give Percy advice on how to handle his new identity as the 'Son of Medusa'.