Often, you'll find the theme of power and control. Eric is a powerful vampire in his own right, and Bella has her own kind of power, whether it's her connection to the Twilight vampires or her own inner strength. Their relationship often explores how they balance power within the story. Also, the theme of loyalty comes up a lot. They both have loyalties to different groups or individuals, and how they navigate those loyalties when they are together is a big part of the fanfictions.
The themes often revolve around the transformation of Bella. As Eric is her maker, her physical and mental transformation is a big part of it. Also, the theme of protection is common, as Eric might feel a strong need to protect his creation, Bella. And there's always the underlying theme of how their relationship impacts the wider vampire community, whether it causes jealousy, suspicion or new alliances.
One great fanfiction could be 'The Unlikely Alliance'. In this story, Bella Swan finds herself in a situation where she has to team up with Eric Northman. It explores their different personalities and how they overcome challenges together. Another interesting one is 'Bella's New Path' which takes a different turn on Bella's story by introducing Eric in a unique way that changes the course of her life in the Twilight - True Blood crossover universe.
Yes, there are quite a few out there. Some explore the unique dynamic between Eric and Bella in a really interesting way, delving into the implications of him being her maker. It often adds a new layer of complexity to their relationship compared to the original storylines.
Sure. There are fanfictions that focus on a romantic relationship between them. In these stories, the authors often play with the idea of how their different personalities, Eric's vampiric nature from 'True Blood' and Bella's from 'Twilight', would interact and develop feelings for each other.
One common theme is love. Many fanfictions explore Eric's romantic relationships, whether it's a new love interest or his relationship with existing characters from the original story.
A third theme could be self - discovery. Through their relationship, whether it's a new friendship or something more complex, both Bella and Eric can learn more about themselves. In some fanfictions, Bella might discover a different side of her personality through her interactions with Eric, and Eric might gain more confidence in himself as a result of being around Bella.
You can try fanfiction websites like Archive of Our Own (AO3). It has a vast collection of fanfictions from various fandoms, including ones that might involve Eric Northman and Bella Swan. The search function there is quite useful to narrow down the results based on your preferences.
One of the main themes is the allure of the dark. In these fanfictions, Eric's dark persona is something that both attracts and terrifies the other characters. His immortality and the way it has shaped his dark view of the world is also a common theme. For example, in some stories, his long years have made him cynical and more likely to embrace his darker impulses. Also, the theme of revenge can be found in many dark Eric Northman fanfictions. If someone wrongs him, his dark side will seek vengeance without mercy.
One common theme is love and attraction. Since Eric Northman is such a charismatic character, often the OC will fall for him or there will be a complex love triangle. Another theme is power struggles. With Eric being a powerful vampire, the OC might get caught up in the power dynamics within the vampire community.
One common theme could be adventure. Since it involves the Northman, there might be a lot of exploration, battles, and quests. Bella might be involved in these adventures, either as a helper or a central figure.