A possible plotline could be Percy's struggle with the responsibility that comes with godly strength. He might be tempted to use it for personal gain at first, but then realizes the consequences it could have on the world. This internal conflict could drive the story as he tries to find a balance between his power and his moral compass.
One interesting plotline could be Percy using his newfound godly strength to take on ancient and powerful monsters that were previously too strong for him. For example, he might face a primordial being and have to find creative ways to use his strength to defeat it.
Another plotline could involve Percy's relationships. With his increased strength, he might face jealousy or admiration from his friends. Maybe Annabeth has to deal with her own insecurities as Percy becomes more powerful, leading to some relationship drama and growth for both of them.
His godly strength can be shown through physical feats like lifting extremely heavy objects with ease, such as entire buildings or large boulders. He could also be depicted as having super - fast running or swimming abilities, outpacing even the fastest demigods or sea creatures.
Obviously, Percy Jackson himself is very common. Since the fanfiction is centered around him having godly strength, he's the main focus. Annabeth Chase also frequently appears as she's Percy's close friend and love interest. Grover, Percy's satyr friend, is another common character as he often gets involved in Percy's adventures.
One idea could be Percy having to face an ancient and powerful monster that was once sealed away by the gods. His godly strength is put to the test as he discovers new abilities he didn't know he had. Another could be Percy competing in a special Olympics - like event among demigods where his godly strength gives him an edge, but also makes him a target. And perhaps he has to use his strength to save a group of mortals who accidentally wandered into a dangerous demigod territory.
A possible plotline could be that the hermit is actually a forgotten hero from the past. He has been in hiding all this time but now his past is catching up with him. As he tries to keep his identity a secret, events unfold that force him to face his former life and the consequences of his actions long ago.
One interesting plotline could be the Seven facing a new, more powerful enemy that is a combination of different mythological creatures. This would test their teamwork and individual powers in new ways.
One interesting plotline could be Percy having to face a new and powerful ancient evil that the gods are also afraid of. This would put him in a position where he has to use his wits and powers in ways he hasn't before.
Maybe in the fanfiction, Percy's player side shows up when he has to navigate the complex social hierarchies of the demigod world. He could be seen charming different groups of demigods, from the children of Athena with his quick - witted remarks to the children of Aphrodite with his newfound 'player' charisma. This could lead to all sorts of adventures and conflicts as he tries to maintain his relationships while also keeping up his player image.
One interesting plotline could be the siblings going on a secret quest together without the knowledge of Chiron or the other campers. They might face a new and unknown monster that tests their combined skills.
In some fanfictions, a centurion discovers a long - lost prophecy that involves Percy. This could lead to a race against time as they try to figure out the meaning of the prophecy and prevent a great disaster. Maybe it involves a new Titan rising and they need Percy's unique connection to the sea gods to stop it.
Another plotline could be Percy trying to find a way to clear his name and escape the prison. Along the way, he might make some unexpected allies among the inmates or even some prison staff who are sympathetic to his cause. This could lead to an epic adventure within the prison walls as he tries to gather evidence and outwit his captors.