One possibility is that Percy uses the trident to explore uncharted areas of the ocean. He discovers ancient underwater ruins that are protected by powerful magic. With the trident, he can navigate through dangerous barriers and uncover secrets about his own heritage and the history of the sea gods.
In some fanfictions, Percy might obtain the trident through a special quest. Maybe he has to prove himself worthy to an ancient sea deity who then bestows the trident upon him as a symbol of power and trust.
He might find it during an underwater adventure. Maybe he stumbles upon an ancient temple dedicated to Poseidon and there, in the center, lies the trident. It could be a test set by Poseidon himself for Percy to prove his worthiness to wield such a powerful weapon.
Well, perhaps in this fanfiction, Percy is in a modern - day, post - apocalyptic world. He uses the gun to defend himself against some mutated creatures that have emerged. It could be that he's lost his usual powers and has to rely on the gun as a last resort.
In this fanfiction, it could also be that Percy is part of a secret organization. He uses a sniper to carry out stealthy operations against an enemy group. The story might focus on his training to become a proficient sniper, his internal struggles while taking on such dangerous tasks, and how his actions impact the overall mission and the people around him.
He might become an even more powerful figure. The trident could enhance his abilities to control water and perhaps give him new powers related to the sea. He could use it to defend his friends and fight against stronger enemies.
In Percy Jackson fanfiction, a trident tattoo could symbolize a connection to Poseidon. It might mark a character as a demigod related to Poseidon or as someone with a special mission or allegiance to the sea god. Maybe it's a sign of power, as the trident is Poseidon's main weapon.
The trident might represent Percy's growth. It could mean that he has reached a new level in his development as a demigod, and Poseidon is acknowledging that with this gift. It's like a rite of passage in a way.
He could have underwater adventures. The trident might give him the ability to communicate with sea creatures and explore the depths of the ocean. He could discover lost underwater cities or battle against sea monsters.
Well, perhaps in the fanfic, Percy is in a post - apocalyptic world where he has to use a gun to defend against mutated creatures. He might be reluctant at first, as he's used to more traditional weapons, but he quickly realizes the efficiency of the gun in this new, dangerous environment.
He could gain the power of enhanced water control. The trident being a symbol of the sea god's power, Percy might be able to manipulate water on a much larger scale, like creating huge tidal waves or even controlling the water inside living beings.