Maybe Damon could save her. He's always been protective of those he cares about and he's not afraid to take on Klaus.
There's also a chance that Bonnie's witch friends could team up to save her. They could combine their magic powers, perform a powerful locating spell, and then fight Klaus to free Bonnie. They might even use some ancient magic that Klaus doesn't expect to overpower him.
One possible plot could be that Klaus believes Bonnie has the key to a powerful spell that could help him gain ultimate power. So he kidnaps her. He whisks her away to a remote island. There, he tries to persuade her to help him, using both threats and false promises. He might start off being cruel but then gradually start to have some strange respect for her as she resists him.
Her friends, like Damon and Stefan, might come to her rescue. They are often the ones to jump into action when one of their own is in danger.
The main characters are clearly Kol and Bonnie. Kol is the one doing the kidnapping, and Bonnie is the victim of this action.
The main characters are Bonnie, a witch with great power and a kind heart deep down. Klaus, an Original vampire who is both feared and respected in the supernatural world. Their baby is also a main character, which is the focus of the fanfiction. There might also be other supporting characters like Damon and Stefan from the Vampire Diaries universe who could interact with Bonnie and Klaus regarding the baby. They might be curious, or they might be worried about the implications of this new addition to the supernatural world.
I'm not sure specifically as it depends on the particular fanfiction. It could be a story where a character named Kol kidnaps Bonnie within the universe of the show or book that the fanfiction is based on. Maybe it's part of a complex plot involving magic, power struggles, or personal vendettas.
Elijah could be on their side. He is Klaus' brother and might understand the importance of the baby, especially if he sees it as a way to keep Klaus in line or to bring about a new era of peace among the different supernatural species. He could use his diplomatic skills to protect the baby from threats.
Chica could also be a main character. She could be the one who tries to comfort Bonnie while he's sick. Maybe she brings him some virtual food or something to cheer him up. And Foxy might be another important character. He could be the one who goes on adventures to find a cure or a way to fix Bonnie. He's the more adventurous type, so it would make sense for him to be the one looking for solutions outside the normal areas in the pizzeria.
A memorable moment in some fanfictions is when Bonnie first realizes that Klaus isn't just a one - dimensional villain. This realization often leads to a shift in their dynamic and makes for some really interesting character development.
There's 'Bonnie's Choice' where Bonnie has to make decisions that involve Klaus in a complex web of supernatural politics. It delves deep into her character and how she copes with Klaus's presence. This story is interesting as it shows a different side of their relationship compared to the show.
The popularity of 'klaus obsessed with bonnie fanfiction' might be due to the contrast between their characters. Klaus is often portrayed as a powerful and sometimes villainous character, while Bonnie is a strong - willed witch. The idea of him being obsessed with her creates an interesting power dynamic and a lot of potential for complex relationships.