Friendship is also a big theme. These OCs usually form bonds with Harry Potter and his friends. Their friendships are often tested by the OC's family background. For instance, Harry and his friends might be initially suspicious of the Black OC because of the family's reputation, but as they get to know the OC better, they realize they are more than just their family name and form strong friendships. This theme of overcoming prejudice through friendship is quite common in such fanfictions.
Love and Romance are very common. Since it's about Sirius Black and an OC, the development of their relationship, from the first meeting to falling in love, is often a central theme.
One common theme is self - discovery. The OC often has to figure out their place in the wizarding world. Another is friendship, as they make new friends like the main characters in Harry Potter. For example, they might become friends with Harry, Hermione, or Ron.
One common theme is the struggle between family loyalty and personal love. Since the Black family has a complex history in the Potter universe, the OC often has to navigate between their family's expectations and their feelings for their love interest.
One common theme is self - discovery. The oc often discovers new things about themselves while interacting with the fem Harry Potter character. Another theme is friendship. They build a strong bond that helps them face the challenges in the wizarding world.
A theme that is quite prevalent is the idea of belonging. The oc, who is an outsider in the world of Harry Potter at first, finds a sense of belonging with female Harry and her friends. Also, the theme of sacrifice can be seen. Sometimes, either the oc or female Harry has to sacrifice something for the sake of their relationship or the greater good in the wizarding world.
One common theme is the discovery of the magical world. The Muggle OC usually starts off not knowing about magic and then has this amazing journey of discovery. Another theme is the clash of cultures, between the Muggle world and the wizarding world.
One common theme is the struggle of the vampire OC to fit into the wizarding world. Since vampires are not a common part of the Harry Potter universe, they often face prejudice and have to hide their true identity. Another theme is the power dynamic. Vampires are usually depicted as having unique powers, and how they use or misuse these powers in the context of the wizarding world is often explored.
Themes in 'Harry Potter x Jacob Black fanfiction' can be diverse. A significant one is the idea of the outsider. Harry is an outsider in the Muggle world, and Jacob is an outsider in the human world due to his werewolf nature. They can bond over this shared feeling. Another theme could be the discovery of new identities. As they interact, they might discover new aspects of themselves. There are also fanfictions that center around the theme of adventure. Combining the magical and werewolf elements, they embark on adventures that neither could have alone, like exploring ancient magical - werewolf related mysteries that span across both their worlds.
One common theme is redemption. Regulus was once a Death Eater, and through his relationship with Harry, he often seeks redemption. For example, in many fanfictions, he tries to make up for his past mistakes by helping Harry in his fight against Voldemort.
One common theme is redemption. Since Regulus was once a Death Eater, many fanfictions explore his path to redemption with Harry often playing a role in that. Another theme is the exploration of family secrets. Given their connection through Sirius, there are often secrets from the Black family that are uncovered.