His mother, Sally Jackson, could play an important role as an ally. She has a strong will and has always been there for Percy. Also, Tyson, his cyclops half - brother, could be a powerful ally with his strength and loyalty. And don't forget about the Nymphs. Some of the water nymphs might help Percy since he has a connection to water.
Well, in a fanfiction scenario where Percy Jackson battles Atlas, it could be an epic showdown. Percy has his demigod abilities like his superhuman strength and his skill with a sword, Riptide. Atlas, on the other hand, is incredibly strong as a Titan. Percy might get help from his friends in the fanfic. They could come up with a plan to distract Atlas while Percy goes for a final strike. It could be a really intense fight with a lot of back - and - forth action.
Maybe because they are both popular in the world of fictional heroes. But that's a wrong idea. They are from different universes with different powers and story backgrounds.
One popular plot is the accidental encounter. Maybe Harry is on a mission in a place where Percy also happens to be, and a misunderstanding leads to a fight. Another plot could be a competition of sorts. A powerful being decides to test the two heroes and pits them against each other in a battle arena. There's also the plot where the two are forced to fight because of a spell or a curse that makes them see each other as enemies.
Perhaps Percy is framed for a crime against the gods and has to fight them while also trying to prove his innocence. He could travel to different realms in the process, seeking evidence and allies. Along the way, he might learn some dark secrets about the gods that could change his perspective on them forever.
Well, in such a fanfic, Percy would probably have to dig deep into his own skills and experiences. Since he's alone, he can't count on Annabeth's strategic thinking or Grover's sensing abilities. He might have to face a god who's out to get him. He'd be forced to use his powers in creative ways, like using his water - control to escape from a labyrinth - like trap instead of having someone else to help him find an exit.
A new and powerful Titan could be the antagonist. One that has been hiding in the shadows and now sees Percy alone as an easy target. Maybe this Titan has a special grudge against Percy and wants to take him down while he's vulnerable.
In fanfiction battles between Harry Potter and Percy Jackson, it's all about the creativity of the writer. Harry Potter has the support of his friends like Ron and Hermione, and his magical items such as the Invisibility Cloak. Percy Jackson has his friends from Camp Half - Blood too, like Annabeth. If the fight is based on a one - on - one duel, Harry's quick - thinking in casting spells could be pitted against Percy's reflexes in combat. However, if the battle involves strategic elements, both could bring in their respective teams and resources. It really depends on the plot and the scenario that the fanfiction author sets up.