Well, Vampire Harry in DxD fanfiction often has a great deal of magical resistance. Since he was already a wizard, and now a vampire, his body and magic are combined in a way that makes it difficult for other magic - users to affect him with spells. His blood also has certain properties. It might be able to heal others to some extent, or it could have a corrupting influence if it gets into the wrong hands. And his vampiric powers can be enhanced over time. He can train and become stronger, faster, and more in control of his compulsion abilities. This makes him a very formidable character in the DxD fanfiction world.
One common theme is the clash of different magic systems. In these fanfics, the magic from Harry Potter, like spells and potions, often clashes or combines with the unique abilities in Highschool DxD.
A prevalent theme is isolation. Vampires are often seen as outsiders in the magical world of Harry Potter. So, Harry may find himself isolated from his friends and the wizarding community in general. He has to deal with the prejudice and fear that others have towards his vampire - like qualities. This theme adds a lot of emotional depth to the stories. In addition, the theme of redemption can also be found. Harry might try to redeem the image of vampires in the eyes of the wizarding world, or he might seek redemption for actions he takes while under the influence of his vampire side.
In such fanfictions, Harry Potter as a vampire often has a very different character development. His experiences as a wizard in the Harry Potter world already shape him, but becoming a vampire adds new layers. For example, he may have to struggle with new instincts and powers. His moral compass might also shift as he has to deal with the vampiric nature of needing blood. He could become more solitary at first, trying to figure out his new self, and then gradually learn to use his vampire abilities in the context of the DxD world, which is full of different races and power dynamics.
In 'Harry Potter Disowned' fanfiction, a common theme is isolation and self - discovery. Harry has to find his place in the world without the support of his family. In 'Highschool DxD', themes like power acquisition and relationships are prevalent. When combined in fanfiction, there could be a theme of using the magic from 'Harry Potter' in the 'Highschool DxD' setting to gain power or find a new family. Another common theme might be the clash of different cultures, like the wizarding culture and the devil - angel - fallen angel culture in 'Highschool DxD'.
Well, in Harry Potter and female vampire fanfiction, a prevalent theme is the exploration of the unknown. The vampire element brings in an air of mystery. Writers often use this to create stories where Harry or other characters have to figure out the secrets of the female vampires. Additionally, themes of loyalty and betrayal can also be common, as the vampires' different nature might lead to complex relationships and loyalties within the story.
One common theme is the struggle between the magical world of Harry Potter and the vampire world. For example, in many fics, female Harry has to deal with the different rules and powers in both worlds.
One common theme is the clash of two different worlds. The wizarding world of Harry Potter with its magic, spells, and Hogwarts, and the world of vampires with their own set of rules about blood, immortality, and night - living. This clash often leads to interesting situations and conflicts in the story.
One common theme is power struggle. Since you have a vampire god involved, there's often a fight for power or control. Another theme is the clash of different mythologies. The magic of Harry Potter world collides with the vampire lore which has its own set of rules and beliefs.
A common theme is the struggle between the magical and the vampiric worlds. For example, in many fics, the OC vampire has to navigate the rules and norms of the wizarding world which are very different from their own vampiric nature.
Power and control is also a theme. In both universes, there are powerful beings. In fanfictions, they often explore how these powerful characters from different worlds interact when it comes to power struggles, like the vampires' thirst for power and the wizards' magic abilities. It can be really exciting to see how the story unfolds with these elements.