Their relationship in fanfiction can be very multi - faceted. There's the aspect of Klaus being a powerful and feared original vampire, and Hope being the product of his bloodline with great potential. Sometimes, it's shown as a protective relationship, where Klaus will stop at nothing to keep Hope safe. However, there are also stories where Hope challenges Klaus's authority and old - fashioned ways, leading to a lot of conflict between them before they can find common ground.
She is sometimes shown as a very strong - willed individual. Since she is human in a family of vampires and other supernatural creatures, she has to be tough. Fanfictions may portray her as using her wits to survive. Maybe she becomes friends with some of the other characters in Klaus' world who help protect her. For instance, she could form a bond with Elijah, Klaus' brother, who sees her as a symbol of hope for Klaus to become more human - like in his actions and emotions.
Well, with her family, it could bring them closer. They would be protective and more involved in her life. Her mother, for example, might be overly cautious and try to keep her sheltered. With her friends, some might be excited and offer their support, while others could be jealous or worried about how her pregnancy would change their dynamic.
Well, a plot could revolve around Hope having visions of Klaus's future. In these visions, she sees that he's in great danger from an ancient evil that is about to be unleashed. So, she sets out on a journey to find a way to prevent this from happening. Along the way, they have to face their own personal demons as well. Maybe Hope has to come to terms with her anger towards Klaus for not being there for her all the time. Another plot could be that Klaus is cursed and Hope is the only one who can break the curse, but it comes at a great cost to her powers.
One great Klaus Mikaelson hurt fanfiction is 'Bleeding Hearts'. It shows Klaus in a really vulnerable state after a powerful spell backfires on him. Another is 'Broken Wings' where he gets physically injured during a fight with an ancient enemy and has to rely on his friends for help.
Often, Voldemort and Bellatrix's relationship is shown as one of master and devoted servant. Bellatrix is extremely loyal to Voldemort, almost to the point of worship. She will do anything he asks without question.
Often, Harry and Severus have a very tense relationship. In fanfictions with an elf involved, the elf can act as a mediator. For example, the elf might be the one to show Severus that Harry is not as bad as he thought. On the other hand, the elf could also be a source of conflict if Severus has some old - fashioned views about elves being enslaved and Harry is against it.
You can start by searching on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Use specific tags like 'Klaus Mikaelson' and sort the results by popularity or rating. Another way is to join fan groups or forums dedicated to The Vampire Diaries or The Originals (the shows Klaus is from). Fans in these groups often share and recommend their favorite fanfictions.
Klaus would probably be very intrigued by Bella. He's used to getting his way with most people, but Bella is not easily swayed. So he might start by trying to charm her, but she would be resistant. For example, he could offer her power or protection, but she would be more concerned about her own values and the people she cares about in Forks.
One great Klaus Mikaelson crossover fanfiction is 'Klaus in the World of Harry Potter'. It's interesting to see how his character, with all his vampire - werewolf hybrid powers, would interact in the magical world of Hogwarts. Another is 'Klaus and the Avengers'. Imagining Klaus facing off against the likes of Thor and Captain America makes for a thrilling read.
One great 'klaus mikaelson oc fanfiction' is 'The Hybrid's Heart'. It has an interesting original character who interacts with Klaus in a very unique way. The plot is full of twists and turns that keep you hooked from start to finish.