Yes, in some Percy Jackson fanfiction, he can be depicted as a weapon. Writers often play with the idea of his powers and abilities, turning him into a sort of weapon. For example, his skills with a sword and his control over water can be exaggerated to make him a formidable weapon against his enemies.
His powers are a big factor. For instance, his ability to heal in water makes him a weapon as he can sustain himself in battles longer. Also, his sword-fighting skills are top - notch, allowing him to take on many foes at once.
One interesting crossover could be Percy using his water powers in a situation where Weapon X's adamantium claws are being overheated. Percy could cool them down and in return, Wolverine (from Weapon X) could teach Percy some combat skills. Another could be a plot where the gods in Percy Jackson's world are interested in the Weapon X technology and try to either obtain it or destroy it.
Another interesting one is 'The Human Side of Demigods'. This story delves deeper into how the demigods interact with humans on a more emotional level. It explores themes like friendship, love, and acceptance between the two groups. The writing is detailed and really makes you think about the relationships in the Percy Jackson universe.
Archive of Our Own (AO3) is also a great place. It has a well - organized tagging system. So if you search for 'Percy Jackson' and then filter for the 'human' tag, you'll be able to find some really good fanfictions. The community there also often leaves comments and reviews, which can help you decide which ones to read.
Perhaps in the fanfic, Percy is a weapon in the sense that he is the key to activating a super - powerful ancient weapon. The gods and goddesses are all vying for control over him because they know that with Percy, they can wield this ultimate weapon. Percy has to navigate through political intrigue among the deities while also trying to figure out his own role in this whole mess.
In a Weapon X fanfiction, Percy might start off being a bit naive about the harsh world of Weapon X. But as he witnesses the experiments and the struggles of the mutants, he could become more empathetic and determined to help. His powers might also develop in new ways as he faces different threats than in his normal Greek - myth - based adventures. For example, he might learn to use his water powers in more creative ways to counter the advanced Weapon X technology.
The main antagonist could be a powerful Titan who wants to use Percy as a weapon to overthrow the Olympian gods. The Titan might see Percy's unique powers as a weapon as the perfect tool to gain ultimate power and reshape the world according to his own desires.
I'm not sure of a specific title off - hand, but you can look on fanfiction.net. There are usually a lot of great stories there about Percy and his godly weapon. Just search for 'Percy Jackson godly weapon' and you'll find a bunch. Some might be really well - written with interesting twists on how the weapon affects Percy's adventures and relationships.