A prevalent theme is also loyalty. The werewolf oc has to decide where their loyalty lies - with their own kind, with the Hellsing organization, or with some other group. This theme is explored through various plot twists and character interactions. For instance, they may be torn between their werewolf instincts and the loyalty they feel towards the humans in Hellsing.
A common theme could be the exploration of the relationship between Vlad and the OC. It might involve how the OC copes with Vlad's dark and powerful nature.
One common theme is adventure. Since Hellsing involves a lot of action against supernatural foes, the fanfiction often has the Walter - OC duo embarking on dangerous missions. Another theme is romance. Writers might be interested in exploring a romantic relationship between Walter and the OC. And also, there's the theme of self - discovery. The OC may be on a journey to find out their true identity or purpose in the Hellsing world, with Walter playing a crucial role in that process.
Identity is a big theme as well. The OC may have their own set of values and beliefs that are tested in the Hellsing world. They might question their own identity as they interact more closely with Alucard and the other characters. Also, themes of loyalty and betrayal can play out, especially when the OC has to choose between different factions or loyalties within the Hellsing universe.
One common theme is the power dynamic. Since Seras is a vampire in the Hellsing universe, the relationship between her and an OC can explore how power differences play out. Another theme is loyalty. Whether it's loyalty to the Hellsing organization or to each other. Also, the theme of identity often comes up. The OC might be struggling with their own identity in a world filled with vampires and other supernatural beings, and Seras can be a part of that exploration.
A major theme is adaptation. The oc gamer has to adapt to the new and often terrifying reality of Hellsing. This includes dealing with vampires, ghouls, and the complex politics within the Hellsing organization. Also, the theme of friendship or alliance often comes up. The OC gamer might form unexpected alliances with the characters from Hellsing, like Alucard or Seras, based on their mutual goals of fighting the greater evil.
The theme of transformation can also be seen. Sometimes the OC might get involved in a situation where they are turned into a werewolf or have to deal with the werewolf's transformation. It adds a lot of drama and tension to the story. Also, loyalty and betrayal are often explored. The werewolf might have to choose between loyalty to his pack and his love for the OC, or there could be betrayal within the pack that affects the relationship with the OC.
One common theme is identity. The werewolf OC often struggles with their dual nature, being part werewolf and part something else in the RWBY universe. Another theme is acceptance. They have to find a way to be accepted by the RWBY characters or at least find their own place. And there's also the theme of power. How their werewolf powers interact with the existing powers in RWBY, like semblances.
Well, there's a fanfiction called 'Hellsing's Hidden Werewolf'. In this story, the werewolf oc is a mysterious figure. It shows how the werewolf's presence affects the relationships between the main characters in the Hellsing world. The author does a good job of creating suspense around the oc's true nature.
One common theme is the struggle with identity. The werewolf OC often has to grapple with being different from the other wizards and witches. They are not fully human during the full moon, and this can make them feel isolated. Another theme is acceptance. They strive to be accepted by their peers and the wizarding society at large. For example, in many fanfictions, the OC has to prove that they are not a danger despite their condition.
Another theme is loyalty. As their relationship develops, they show loyalty to each other, whether it's facing external enemies or dealing with internal pack politics. For example, in many stories, the werewolf will protect the male OC at all costs.