One common theme is the clash of different power systems. The magic in Harry Potter and the supernatural powers in Underworld are very different, so seeing how they interact is a big theme. For example, how would a wizard's spell work against a vampire's strength? Another theme could be the exploration of different cultures within the two universes, like the wizarding culture and the vampire/werewolf culture.
Well, a frequent theme is the idea of unlikely alliances. In many 'Harry Potter x Underworld' fanfics, you'll see characters from both sides having to team up. Maybe Harry and his friends need to work with the vampires to fight a common enemy. Also, the theme of secrecy and revelation is common. The wizarding world is all about secrets, and so is the underworld in Underworld. How these secrets are revealed and dealt with when the two worlds meet is often explored. This can lead to some really interesting plot twists and character development.
Common themes include the exploration of new identities. When the two universes collide, characters may have to re - evaluate who they are. For instance, a Hogwarts student might discover they have an affinity for the underworld's way of life, or a vampire might be intrigued by the magic of the wizarding world. Another theme is the struggle for power. Both universes have their own power structures, and when combined, there can be a fight for dominance or a new power hierarchy might emerge.
One common theme is the exploration of gender roles in the wizarding world. Since Harry is female, it often looks at how she is treated differently in a male - dominated society like Hogwarts. Another theme is the alteration of relationships. For example, her friendship with Ron and Hermione might change, or her interactions with male characters could be different.
One common theme is friendship - turned - love. Since they start as friends in the original series, fanfics often explore how that deep friendship can transform into a romantic relationship. Another theme is facing challenges together, like battling dark wizards or solving magical mysteries as a couple.
Another theme is the exploration of intelligence. Ravenclaw is the house of the wise, so in these fanfics, there's often a focus on the character's intelligence, whether it's solving magical puzzles or outsmarting villains. For example, the Ravenclaw character might use their sharp mind to help Harry in his battles. And also, the discovery of self - identity is common. The Ravenclaw - related character may be on a journey to find out who they really are within the context of the Harry Potter universe, especially when they are involved with Harry in different adventures.
One common theme could be adventure. Combining the magical adventures in Harry Potter's world with Shanks' seafaring adventures would make for an exciting story. Another might be friendship. Harry and Shanks could form an unlikely friendship and learn from each other.
Another theme is the journey of self - discovery. Characters from both universes often find themselves in a new and unfamiliar world (either Hogwarts or Narnia). This forces them to learn more about themselves, their abilities, and their values. For instance, a Harry Potter character in Narnia might realize they have a different kind of courage than they thought. In a more detailed sense, in some fanfics, Hermione might find that her knowledge of spells doesn't always help in Narnia and she has to rely on her wits and intuition more, which is a new aspect of her self - discovery.
Common themes include identity. For instance, a character from Harry Potter might question their identity when exposed to the X - Men's world of mutants. Also, the concept of good vs. evil is often explored. The villains in both universes, like Voldemort and Magneto, have different ideologies, and fanfics might play with how the heroes from both sides come together to fight a common foe. There's also the theme of friendship, as characters from both series form new alliances and relationships.
The theme of redemption can also be found. Daphne is often from a Slytherin family, and in some fanfics, she has to overcome the negative stereotypes associated with her house. Her relationship with Harry helps in this redemption arc.
One common theme is the clash and combination of different powers. The magic from Harry Potter and the chakra - based powers of Naruko often interact in interesting ways. Another theme is the characters learning about each other's worlds. Harry might be fascinated by Naruko's ninja village and training, while Naruko could be intrigued by Hogwarts and the magic there.
One common theme is the power struggle. Lucius is often associated with power in the wizarding world, and Harry has his own kind of power, so their relationship in fanfics can be about who has more influence over the other. Another theme is redemption. Some fanfics explore Lucius finding redemption through his relationship with Harry.
One common theme is friendship. Since Harry and Cedric are from different houses, their budding friendship is often explored. Another theme is redemption. In some fanfics, Cedric gets a chance to 'redeem' his early death. Also, there's the theme of love. Whether it's a platonic love or something more romantic between them.