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.
There are fanfictions that explore Percy's relationship with his father Loki in depth. Loki might be a complex figure, teaching Percy some of his trickster ways while also having a somewhat strained father - son relationship. Percy could struggle with Loki's reputation but also find strength in the unique powers he inherits from him. This could lead to a story full of internal conflict and external battles as he tries to make his own mark in the mythological universe.
One interesting Percy, brother of Loki fanfiction could be 'Percy's Asgardian Adventure'. In it, Percy discovers his relation to Loki and has to navigate the complex politics of Asgard. Another one might be 'Percy and Loki's Bond', which focuses on how their brotherly bond develops over time, despite the differences in their upbringing. There's also 'Percy in Loki's Shadow', where Percy struggles to come out from under Loki's well - known reputation in Asgard.
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.
There are some fanfictions that focus on the relationship between Percy and Zoe in the context of Percy being the 'Son of Chaos'. In these, they often have to deal with the mistrust from other demigods at first. But as the story progresses, they prove their worth and their relationship deepens, like in a story where they go on a quest to retrieve a powerful artifact that can only be controlled by a 'Son of Chaos' and his trusted ally, which is Zoe in this case.
There's also 'When Percy Meets Loki: A Crossover of Worlds'. This fanfic focuses more on the cultural shock between the two characters. Percy is used to the straightforwardness of the Greek gods, while Loki's devious nature and the complex politics of the Norse gods are something new to him. It's an interesting read as it explores their relationship development in a unique way.
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.
One great fanfiction could be 'Percy's New Family in Aphrodite's Realm'. It explores Percy's adjustment to being Aphrodite's adopted son. He has to learn about love and beauty in a whole new way. For example, he might start to see the beauty in things he never noticed before, like the way the sun reflects off a calm lake in the middle of a forest.
One great fanfic could be one where Percy, as the son of Artemis, goes on a quest to retrieve a magical artifact that was stolen from the moon goddess's temple. It could involve him teaming up with some of the other demigods and facing various mythical creatures along the way.
There might be a fanfic where Percy, son of Apollo, goes on a quest to find a lost artifact that was once used by Apollo himself. Along the way, he meets other demigods and they face various challenges together. For example, they might have to battle mythical creatures that are immune to normal weapons and Percy has to figure out how to use his unique powers to defeat them.
One great Percy son of Demeter fanfiction is 'Percy's Green Thumb'. In this story, Percy discovers his Demeter - given powers in a really interesting way. He starts to be able to make plants grow at an extraordinary rate, which helps him in battles and also in creating beautiful gardens around Camp Half - Blood. It's a really cool take on the idea of Percy being Demeter's son.
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.