In a fanfiction where Percy gains all of Kronos' powers, he would likely become extremely powerful. He could have control over time, which is one of Kronos' major abilities. This might lead to him being able to manipulate events in ways no one else could. For example, he could go back in time to prevent disasters or change the outcome of battles.
If Percy gains all of Kronos' powers in fanfiction, his character would transform in multiple ways. For starters, he might become more intimidating. His presence alone could send shivers down the spines of others. His sense of humor, which is a big part of his charm, might fade as he becomes more focused on the power he holds. He would also have to grapple with a new sense of identity. Is he still Percy, the son of Poseidon, or is he now something more, something closer to a Titan? This internal conflict could make his character more brooding and less carefree. Moreover, his relationships with other characters would change. Some might fear him, while others might try to manipulate him for his new powers.
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.
One consequence could be Percy becoming an outcast among his fellow demigods. Since his powers now come from Kronos, they might see him as a threat or a corrupted being.
She could potentially have the power of regeneration. Kronos was a powerful being, and if she inherits some of that essence, she might be able to heal from wounds faster than normal demigods. This would make her a very tough opponent in combat as she could keep coming back even after taking serious hits.
In many fanfictions, Percy might use his water powers in a unique way. Maybe he combines his control over water with his sword fighting skills. He could create a giant water vortex to disorient Kronos and then strike with Riptide while Kronos is off - balance.
His water - based powers could be enhanced in a unique way. He might be able to shape water into more complex and intricate forms, like forging water - made tools or weapons, similar to how Hephaestus forges metal. This would be a new and interesting addition to his existing abilities.
Maybe there are some original characters created by the fanfiction author. These characters could have their own unique abilities and backstories. They might be the ones who tip the scales in Percy's favor, for instance, by having a special power that weakens Kronos just before Percy makes the final blow.
Luke could also be a prominent character. Since he has a complex relationship with Kronos in the original story, in fanfiction he could play a role in either helping or hindering fem Percy's efforts against Kronos. Nico di Angelo is another possibility. His powers over the dead could be useful in a fight against Kronos, and he might team up with fem Percy for that reason.
The power to manipulate elements like water or earth could also be really exciting. Since Percy already has some connection to water, adding earth - manipulating powers would make him more versatile. He could create barriers of earth, or use water and earth together in new and creative ways. It would change the way he approaches battles and problem - solving in the fanfic.