One common theme is the transformation. When Klaus bites the reader, there's often a sense of the reader becoming something different, whether it's physically or in terms of their relationship with Klaus. It's like they are entering a new world.
One great 'Originals Klaus Bites Reader' fanfiction is 'Bitten by Klaus' on FanFiction.net. It has an interesting take on the situation where Klaus bites the reader and the subsequent relationship that develops. The author does a great job of building tension and chemistry between the characters.
One common theme could be protection. With Klaus being a powerful but also very much hunted character, protecting the baby from his enemies would be crucial. Another theme might be family. How the baby fits into the already complex family structure of the Originals.
One common theme is the power dynamic. Klaus is often a powerful character, and the relationship with the reader explores how they interact with that power. For example, the reader might be in a position of vulnerability at first but then find their own strength.
Often, there's a plot twist where the baby has some sort of special power or ability that no one expected. This then makes the baby a target for all kinds of supernatural forces. In some fanfictions, the pregnancy also causes a rift between Klaus and Elena, as they have different ideas on how to protect the child. And then, suddenly, a long - lost relative of Klaus or Elena shows up, claiming to have a solution to all their problems, but with their own hidden motives.
One common theme could be the character's struggle to adapt in the new 'Originals' world. They might face challenges like dealing with the powerful vampires and their complex politics. Another theme could be the exploration of new relationships, either romantic or platonic, within the context of the 'Originals' universe.
One common theme is the clash of different worlds. Glee is about a high - school music group and The Originals is about vampires and witches. So when combined, there's often the theme of how these two very different worlds interact.
Love and relationships also play a big part. Whether it's a new romantic relationship formed in the crossover world or the continuation of existing ones, it's a recurring theme. Characters from 'The Originals' might find new love interests in the crossed - over universe, or they have to fight for their existing relationships against new challenges.
A lot of these fanfictions also deal with the idea of acceptance. Bella has to accept her new state as a vampire, and the Cullen family has to accept her as one of their own. There are often challenges and conflicts related to this acceptance process.
Often, the theme of hidden emotions is present. Snape has a very complex relationship with Harry in the original series, and the biting in fanfiction can be a way to expose the unspoken and intense feelings he has for Harry. It could be a form of extreme jealousy, protectiveness or even a twisted form of love. There's also the theme of transformation. The bite might change Harry in some way, either physically or in his perception of Snape and the wizarding world around him.
A theme that frequently shows up is redemption. Klaus, being a complex and often villainous character, may be on a path to redemption in some fanfictions, with Stefan either helping or hindering. Also, power dynamics play a role. Klaus is very powerful, and Stefan has his own set of abilities, so how they interact in terms of power is a common theme. For example, in some stories, Stefan has to find ways to level the playing field when dealing with Klaus.