One common theme is identity. Percy has to figure out who he is now that he has this new family connection. Another is power. Since Dumbledore was so powerful, Percy might inherit some of that power or knowledge.
Yes, there are quite a few. You can start by looking on fanfiction.net or Archive of Our Own. Some stories might explore Percy's newfound family connection and how it changes his relationship with the wizarding world and his friends at Hogwarts.
This could be a really interesting fanfiction idea. Percy Jackson has his own rich world of Greek mythology in the 'Percy Jackson' series, and Dumbledore is from the 'Harry Potter' universe. Combining them could lead to some unique magic and adventure. Maybe Percy would inherit some of Dumbledore's wisdom and magical abilities along with his own demigod powers. It could be set in a world where the two fictional universes collide, and Percy has to use both his skills to face new threats.
One possible plot could be Percy discovering his relation to Dumbledore. Maybe he starts having strange dreams or visions that lead him to the wizarding world. He then has to learn about his new family connection while also trying to keep his demigod identity a secret from most of the wizards, as they might not understand it.
One common plot twist is that Dumbledore knew all along about Harry being his grandson but kept it a secret to protect him. Another could be that there's a dark family secret that comes to light, like a curse on the family line that Harry has to break.
One common theme is identity discovery. Bella finding out she's Dumbledore's daughter and how that changes her view of herself. Another could be family secrets, as Dumbledore is a very secretive character in the original series. And there's often a theme of redemption or a new purpose for Bella in the wizarding world.
Another theme is the exploration of magic. Fanfictions often expand on the magic system in the original story. For example, they might introduce new spells or different ways of using magic that the grandson discovers. There could also be themes related to family and legacy, as the grandson has to live up to the reputation of the wise man. It's about how he honors his grandfather's teachings while also forging his own path in the world of magic.
One common theme is his so - called 'manipulation' of Harry. Some fanfics focus on how Dumbledore used Harry for the greater good without really considering Harry's personal feelings. Another theme is his secrecy. Writers in these fanfictions often explore how his secrets had negative consequences for the characters around him.
The theme of disillusionment also often appears. Harry, who once idolized Dumbledore, now sees him in a new light. He realizes that Dumbledore is not the perfect mentor he once thought, and this realization leads to his hatred. This can be explored in various ways, such as through flashbacks or interactions with other characters who have different views of Dumbledore.
One common theme is his discovery of self. In many fanfictions, young Albus is on a journey to figure out who he is, his place in the wizarding world, and his values. Another theme is friendship. Writers often explore the friends he made during his youth and how those relationships shaped him.
The theme of forbidden love is quite prevalent. Their relationship was not straightforward in the original story, and in fanfiction, it's often explored as something that is not easily accepted by the wizarding society. Also, the theme of sacrifice. They might have to sacrifice their love for the safety of others or for a greater cause. In some fanfictions, their love is also about self - discovery. As they get closer, they learn more about themselves and their own values.