Yes, there are likely some fanfictions out there with this concept. The Percy Jackson fandom is quite large and creative, so it's possible for fans to explore such an interesting and unorthodox relationship in their stories.
One great Kronos fanfiction could be about his backstory before he turned evil. Maybe it explores his relationship with the other Titans and what led him to start the war against the Olympians.
It could be that Kronos believes Percy has some hidden potential that, when combined with his powers, would lead to a situation beneficial for Kronos. For example, Percy's strong connection to the sea could be used in a way that disrupts Poseidon's domain and the balance among the gods. Kronos, being the Titan of time and a master of long - term planning, might foresee a complex chain of events that would unfold if Percy had his powers.
Annabeth is often a popular character. In fanfiction, she might play a crucial role in helping Percy deal with his complex identity as the son of Kronos. Grover could also be popular as he's Percy's loyal friend and could be there to support Percy through his struggles related to his new - found heritage.
His friends like Annabeth might come to his rescue. Annabeth is smart and resourceful, she could figure out where Percy is being held and lead a rescue mission.
If Kronos were to win in a Percy Jackson fanfiction, it would be a cataclysmic event. Kronos represents the old, chaotic order. His victory would mean the collapse of the current pantheon - based system. The gods' domains would be up for grabs, leading to widespread conflict among the Titans and other powerful beings. Percy and his allies would have failed in their quest to protect the world. The very fabric of the Percy Jackson universe, with its themes of friendship, heroism, and the fight against tyranny, would be shredded. It would be a very different and much darker world than the one we see in the original series.
To develop the character, start with his backstory. Since he's the son of Kronos, he might have grown up in a very different environment compared to other demigods. Maybe he was hidden away by a minor god who felt sorry for him. His past experiences of being alone and shunned because of his father would shape his personality, making him a bit of a loner at first.
Well, one of Percy's accomplishments in Kronos fanfiction could be his ability to resist Kronos' influence. Kronos is a powerful and manipulative figure, but Percy, with his strong will and loyalty to his friends and the gods, stands firm. This not only protects him but also gives hope to others. Another accomplishment might be his discovery of hidden powers or knowledge that helps in the fight against Kronos. Maybe he uncovers an ancient prophecy or a new way to use his powers that turns the tide of the battle.
One way for Kronos to win in Percy Jackson fanfiction is by spreading more chaos and discord. If he could make the demigods lose faith in the gods and each other, his job would be much easier. He could also try to find a way to use the prophecies to his advantage. Maybe he could twist the words of the prophecies to make the demigods make wrong decisions. And if he could somehow break the connection between the demigods and their godly parents, the demigods would be weaker and he could overpower them.
One possible plot could be that Percy discovers his true relation to Kronos early on. This revelation could cause a great deal of inner turmoil as he has to come to terms with being related to the main villain. He might then struggle with whether to side with his friends or his new - found brother, creating a complex moral dilemma.