Common themes include self - discovery. Percy has to figure out how being the Son of Echidna fits into his life. Also, there's often a theme of conflict. This could be conflict with other characters who might be suspicious or jealous of his new status. And family is also a theme, as he has to deal with the implications of having Echidna as a parent in a world where his relationships with other characters like Poseidon are already complex.
Yes, there are quite a few. You can start by looking on fanfiction websites like Archive of Our Own or FanFiction.net. Just search for 'Percy Jackson Son of Echidna' and you'll find a variety of stories, from action - packed adventures to more character - focused ones.
The relationship between life and death is also a common theme. Percy, as the son of Thanatos, is in a unique position to bridge the gap between the two. Fanfictions often explore how he can use this connection to his advantage, whether it's in battles, in helping the dead move on, or in understanding the cycle of life and death better. It's a complex theme that adds depth to the stories.
One common theme is identity. Percy has to figure out who he is now as the Son of Thor in addition to being a demigod in the Greek sense. Another theme is power. He might have new powers from Thor, and the fanfics often explore how he learns to control and use them. There's also the theme of family, as he now has a connection to the Norse pantheon through Thor.
One common theme is the struggle with identity. Since Percy is usually the son of Poseidon in the original series, making him the Son of Hades in fanfiction often leads to him dealing with a new sense of self. Another theme is power and its consequences. Hades has a lot of dark and powerful abilities, so fanfictions might explore how Percy copes with having access to such powers.
One common theme is identity. Since Percy is now the son of Vesta in these fanfictions, he often has to figure out who he really is in this new context. Another theme is power. How does being the son of Vesta change his powers and how he uses them? For example, in some fanfictions, he might have new abilities related to fire or hearth.
One common theme is identity. Since Percy is the son of Erebus, he has to figure out who he really is now. Another theme is acceptance. He has to deal with how others in the Percy Jackson world accept or reject him because of his new heritage. And of course, there's the theme of power. With his new connection to Erebus, he often has new and sometimes dangerous powers that he has to learn to control.
There are several common themes. First, there's the theme of adaptation. Percy has to adapt to the new rules and expectations that come with being the son of Osiris. Second, family is a big theme. He has a whole new family connection in the Egyptian pantheon, and how that affects his relationship with his Greek family (like Poseidon) is often explored. Third, there's the theme of discovery. He's constantly discovering new things about himself, his powers, and the Egyptian mythology in these fanfictions.
One common theme is identity. Percy has to figure out who he is now that he's the son of Helios, different from his previous understanding of himself as Poseidon's son.
One common theme is power struggle. Since Percy has two very different sources of power as a demigod and as the Son of Sparda, he often has to figure out how to control and use them. Another theme is identity. He has to reconcile his two identities and figure out who he really is.
One common theme could be the struggle between good and evil. Since Percy is typically a hero in the original series, having Lucifer as a father in fanfiction would create an internal conflict within him about his nature. Another theme might be power. Lucifer is often associated with great power, so the fanfiction might explore how Percy deals with that new - found or inherited power.