He might inherit some of Voldemort's Parseltongue ability. Since it's a rather unique and somewhat dark ability, it would be really interesting to see Percy with it. Maybe he could use it to his advantage in some way, like communicating with snakes to gather information in a dangerous situation.
Well, it would completely mess up the existing relationships in the original story. For example, the Weasley family's connection to the wizarding world's power dynamics would be drastically different. Percy, who was always a bit of a stickler for the rules in the original, might have some internal conflict knowing his family has such a dark connection. Also, it could lead to some really interesting interactions between Percy and the Death Eaters or other Voldemort supporters. Maybe Percy would be targeted more by both sides, the good because they'd be worried about his loyalty and the bad because they'd want to use him for Voldemort's purposes.
No. Percy Jackson's world is based on Greek mythology, while Voldemort is from the wizarding world of Harry Potter. Fanfictions might try to mash them up, but usually Percy has his own adventures and enemies in his own myth - based universe and is not related to Voldemort's heir. Unless a fanfic writer decides to do some wild crossover and come up with a really out - there reason for a connection.
There's no official connection between them in the original series. But in fanfiction, anything can happen. Some fanfictions might make Percy Jackson cross paths with Voldemort's heir if the author wants to explore a crossover scenario. It could be a really interesting concept, like Percy having to deal with the dark magic of Voldemort's heir in a world that combines Greek mythology and Harry Potter magic.
There might be very few fanfictions on this exact topic as it combines two very different fictional universes. But if it exists, it could explore how the powers from the Percy Jackson world, like the ability to control water or superhuman strength, would interact with the magic of the Harry Potter world where Voldemort resides. The grandson could be on a quest to stop Voldemort from getting some powerful demigod - related artifact that could enhance his dark magic.
There might be. Fanfiction is a place for creativity to run wild. Imagine Percy Jackson suddenly showing up in the wizarding world where Voldemort rules. Percy's powers are not based on magic as Voldemort knows it. His ability to summon water in a place like Hogwarts could be a huge shock. Voldemort, who is used to being the most feared in his world, might be scared when faced with a being like Percy who has such different and potentially overwhelming powers.
There could be. Fanfiction allows for all kinds of wild ideas. Given that Percy is a character in the Harry Potter series and Voldemort is the main villain, it's not surprising that someone might come up with a story where Percy manages to kill Voldemort. It might be a really unique read, delving into how Percy, with his own set of skills and personality traits, could achieve such a feat.
In the fanfiction, perhaps Voldemort's grandson is not as evil as his grandfather. He could be trying to redeem his family's name. Percy Jackson might initially be suspicious of him but then they team up. The grandson could teach Percy some basic magic, and Percy could teach him how to be brave in the face of real danger, not just the kind wizards face. They might go on an adventure together to retrieve a powerful artifact that could change the fate of both their worlds. This would be a great way to explore the idea of good and evil not being so black and white.
One possible plot could be Percy getting involved with Voldemort out of a misguided sense of power. Maybe Percy feels overlooked in the wizarding world and Voldemort offers him a chance to be part of something 'great'. But as time goes on, Percy starts to see the true evil of Voldemort and has to struggle with his own choices and how to break free from this dark alliance.
In some fanfictions, the storyline might involve a mix - up of magic. Percy's powers from the Greek gods could be pitted against the dark magic of Voldemort's heir. For example, Percy's ability to control water might be used to counter the heir's fire - based dark spells. There could also be a storyline where Percy is sent into the wizarding world by the gods to stop the rise of Voldemort's heir because they fear the chaos it could bring to the entire multiverse. And of course, there could be a love story where a character from Percy's world falls in love with someone related to Voldemort's heir, creating a complex web of relationships.