Well, in some Percy son of Loki fanfictions, he could be on a quest to find his true place. Maybe he teams up with characters from both Norse and Greek mythologies. For example, he could go on an adventure with a Greek demigod and a Norse warrior. This would lead to some really interesting interactions and plot twists as they learn from each other's cultures and powers.
One common theme is identity. Percy, being the son of Loki, has to figure out who he really is. Is he more Norse or more like the Greek demigods he might interact with? Another theme is power. He has Loki's powers which can be both a blessing and a curse. He has to learn to control them.
Well, if Percy is the son of Loki in a fanfiction, he could inherit Loki's ability to manipulate minds to some extent. This would give him an advantage in getting out of tricky situations. He might also get Loki's power of teleportation or at least some form of fast movement. And considering Loki's connection to chaos, Percy could have an innate ability to disrupt magic or technology around him. His water - based powers from his Greek side could be enhanced with Loki's chaotic energy, making his control over water more unpredictable and powerful.
Well, if Percy was the son of Loki in a fanfiction, it would completely turn the Percy Jackson storyline upside down. Percy's powers would likely be a mix of his demigod abilities and Loki's trickery. His relationships with the other characters would also change. For example, his loyalty to Camp Half - Blood might be questioned as Loki is known for his duplicity. He could have a more mischievous side and might not be as straightforward in his actions as he is in the original stories.
One possibility could be a story where Harry Potter, being the son of Loki, has a different set of magical abilities. He might be more mischievous like Loki and this could lead to some interesting interactions with the wizarding world. In this fanfiction, his encounter with Percy Jackson could be a clash of two different mythologies. Maybe they start as rivals but then realize they have to work together to face a common threat.
Well, instead of summoning water or having a connection with the sea, he might have the power to shift shapes, a common ability associated with Loki. He could turn into different animals or even other people to gain an advantage in a fight or to infiltrate an enemy's stronghold. Also, his power over fire could be enhanced, as Loki has some association with fire in Norse mythology. He could use this to create distractions or attack opponents from a distance.
Percy would likely become more devious. Growing up with Loki as an adoptive father, he'd be exposed to Loki's tricks and lies. So instead of his straightforward, if sometimes impulsive, nature in the original Percy Jackson stories, he might think more about the different angles of a situation before acting.
One plot idea could be Percy having to deal with the dual nature of his supposed heritage. Since he was thought to be Poseidon's son in the original, now being Loki's son in the fanfiction would mean he has to navigate the trickery and chaos associated with Loki. For example, he might find that some of his powers are more illusion - based rather than water - based like before. Another idea could be Percy being caught in a conflict between the Norse and Greek pantheons. The Norse gods might want him to embrace his Loki - side and use his skills for their purposes, while the Greek gods see him as an anomaly and a potential threat.
It could be really exciting. Harry might have some god - like powers from Loki. He could use his wits and Loki - given abilities to outsmart enemies. Meeting Percy would be like two different worlds colliding. They could exchange knowledge about their respective mythologies.
Percy's personality would be a complex mix. From Poseidon, he would inherit a sense of loyalty and a connection to nature, specifically the sea. However, Loki's influence would make him more devious. He could be the kind of person who would seem trustworthy on the surface, but then pull a fast one on you when you least expect it. He'd have a love for adventure like the original Percy, but his methods of getting into and out of trouble would be more elaborate and sneaky. He'd also be very good at getting out of sticky situations using his wits, which he'd get from both his 'parents' in this fanfiction scenario.