Well, in some fanfictions, Percy might absorb power through a magical artifact. For example, he could touch an ancient relic that transfers its energy to him. This could be a way to give him new abilities or enhance his existing ones like his water - controlling powers.
Well, if Percy Jackson absorbs Gaea in fanfiction, it could lead to a really interesting plot twist. Percy already has a lot of power with his control over water, but adding Gaea's essence would be something else entirely. He might start to have visions related to the earth's history and future. And his personality could change too, perhaps becoming more stoic or more in tune with the natural cycles of the world as he now embodies a part of the earth goddess.
Another way could be via some sort of magical artifact. For example, he discovers an ancient amulet that has the power to enhance his natural abilities. When he touches it, it starts to merge with his essence, gradually making him stronger and endowing him with new powers like the ability to control different elements related to water, not just manipulate it.
He becomes more confident. With Hyperion's power, Percy has a new level of self - assurance. He's not as hesitant in battles or when making decisions.
Well, it could make him more complex. Absorbing abilities might give him new outlooks and skills that change how he views himself and his place in the world. For example, if he absorbs a strategic ability, he might become more of a planner rather than relying on his usual impulsive nature. This could lead to him being more respected by his peers and also give him new internal conflicts as he tries to balance his old self with the new capabilities.
Percy would likely become more confident, given the immense power he's gained from absorbing Ouranos. He might also become more solitary, as he tries to understand and control this new power within him.
Well, it could mean a huge power boost for Percy. Hyperion is a powerful Titan, so Percy might gain abilities like enhanced strength, maybe some new control over light or the sun. It could also change his status among the demigods, making him even more of a force to be reckoned with.
Often, possession power in Percy Jackson fanfiction is shown as a very dark and insidious ability. It can be used to make characters act against their will. For instance, a possessed character might turn on their friends, like if a demigod is possessed and then tries to harm others at Camp Half - Blood.
Well, in some fanfictions, it might be related to his demigod powers. Since he has a connection to the water element, blood being a liquid could potentially be manipulated in a way similar to how he controls water. Maybe he can sense the water content in blood and use his will to move or influence it.
Well, in some fanfictions, Percy might control ice through a new power bestowed upon him by some mysterious god or entity. Maybe he discovers he has the ability during a quest when he's in a really cold and magical place.
In some fanfictions, his power develops as he forms new alliances. If he teams up with a water nymph or a merman who has different knowledge about the ocean, he can learn new ways to use his power. His emotional state can also play a role. If he becomes more in tune with his love for the ocean and its inhabitants, his power could grow stronger, allowing him to do things like create more complex oceanic structures or calm larger areas of stormy seas.