The theme of family secrets is quite common. In many of these fanfictions, she discovers that her connection to Hades was hidden for a reason. There are also themes related to friendship. She has to find friends who can accept her for who she is, not just for her powerful lineage.
One common theme is identity struggle. Since she's the daughter of Hades, she has to figure out where she belongs in both the wizarding world and the realm of the gods. Another theme is power and its control. Her powers from Hades are often very different from typical wizarding magic.
One common theme is identity. Since she's Female Harry and the daughter of Hades, she often struggles to figure out who she really is in relation to both her wizarding self and her underworld heritage. Another theme is power. Her connection to Hades gives her unique powers, and stories often explore how she uses or struggles with these powers. For example, in some fanfictions, she has to learn to control her dark magic.
One common theme is identity. The fem Harry has to figure out who she is now that she's the daughter of Morgana. Another theme is power. Since Morgana was a powerful figure, the fem Harry often has to deal with the implications of having that power or the potential for it. There's also the theme of acceptance. She has to face the wizarding world's reaction to her new identity, whether it's acceptance or rejection.
One common theme is identity. Fem Harry has to come to terms with being Regulus' daughter and how that changes her perception of herself. Another is family legacy, as she has to deal with the Black family's reputation.
One common theme is the power struggle. Since Percy is often portrayed as a strong character and Hades is a powerful god, there's a lot of back - and - forth in terms of who has the upper hand. Another theme is the forbidden love aspect, as their relationship is not typical in the original mythology.
Family drama is often present. There could be conflict with her 'father' Loki, or she might be trying to find her place in Loki's family. On the other hand, she could also have a complex relationship with the characters from the Harry Potter side, like trying to fit in with the Weasleys or deal with Dumbledore's expectations while being Loki's daughter.
One common theme is self - discovery. Just like Fem Harry, the character has to figure out her identity as a dragon princess daughter. Another theme is power and how to control it. Since dragons are often associated with great power, the character has to learn to use it responsibly.
One common theme is identity. Fem Harry has to figure out who she is in relation to being Ash's daughter and also having her own identity within the magical or Pokémon - filled world. Another theme is adventure. Since Ash is known for his adventures in the Pokémon world, fem Harry often goes on her own quests.
One common theme is identity crisis. Fem Harry has to come to terms with being Snape's daughter instead of just an ordinary orphan. Another theme is family and acceptance. Snape has to accept this new role as a father, and Fem Harry has to accept him as her father. There's also often a theme of secrecy and revelation, as the truth about their relationship is usually a big secret that gets revealed at some point.
One common plot theme could be her struggle with her dual identity. Being a female Harry and the daughter of Persephone means she has to balance the wizarding world she's born into and her connection to the underworld. Another theme might be her relationships. For example, how she interacts with her friends from Hogwarts who now see her in a different light due to her new heritage. Also, there could be a theme of her coming to terms with her powers. As the daughter of Persephone, she might have unique abilities related to the underworld, like controlling plants in a more powerful way or having an affinity for the dead. This can lead to her using these powers to protect Hogwarts or the wizarding world from new threats.
One great fem Harry and Hades fanfiction is 'Underworld's Rose'. In this story, fem Harry has a unique encounter with Hades in the underworld. The author does a wonderful job of portraying the relationship between them, with a touch of mystery and a lot of character development.