In a fanfiction, it could be that the Death Eaters team up with some of Klaus's enemies. Harry and Klaus then form an unlikely alliance. Klaus teaches Harry some of his survival skills from centuries of being on the run, while Harry shows Klaus the power of friendship and loyalty within the wizarding community. This exchange of knowledge and values could lead to a whole new set of adventures and character developments.
Perhaps there could be a situation where a dark magic spell in the Potter universe somehow links to the Original vampire's curse in Klaus's world. Harry and Klaus are forced to work together to break the spell/curse. Along the way, Klaus sees a bit of himself in Harry's determination and Harry realizes that Klaus isn't entirely a monster.
Maybe Harry discovers his Mikaelson heritage when strange things start to happen to him during his time at Hogwarts. His newfound powers could attract the attention of both the wizarding world and the supernatural world from Klaus' side, leading to a complex web of alliances and rivalries. He might have to learn how to balance his wizarding skills with his vampire - like abilities.
One idea could be that Hope, being a powerful witch herself, is sent to Hogwarts on an exchange program. There, she meets Harry Potter and they bond over their shared experiences of being different from their peers. Another plot could involve a dark magic threat that only their combined powers can defeat. They start as strangers, but as they train together, they develop a deep friendship and mutual respect.
One interesting story could be where Klaus Mikaelson somehow ends up in the wizarding world of Harry Potter. Maybe he's there to seek a powerful magical object and crosses paths with Harry. They initially clash due to their different natures, but then find common ground in fighting a new dark force that threatens both the magical world and Klaus's own world of vampires and hybrids.
One creative idea is a fanfiction where the Hogwarts School is transported into the world of Klaus Mikaelson. This would lead to all sorts of chaos as the wizards and witches have to deal with vampires and other supernatural beings. It could also lead to some interesting friendships and rivalries between the students and the vampires.
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 plot idea could be Kai and Klaus teaming up to take on a common enemy. Maybe a powerful witch or vampire that threatens their families or their own existence. They could start off as reluctant allies, but over time develop a grudging respect for each other.
One idea could be that Hope, with her unique powers as a Mikaelson, visits Hogwarts for a special exchange program. She could end up befriending Harry and together they face a new dark threat that combines the magic of the wizarding world and the supernatural powers of the Mikaelsons. Maybe a dark wizard is trying to harness the power of the Mikaelson bloodline for some evil spell, and Harry and Hope must stop it.
A great plot could be Klaus and the reader trying to find a safe haven for their unborn child. They might travel to different places, encountering various supernatural beings along the way. Some might offer help, while others might see the baby as a threat. Also, the internal conflict within Klaus about being a father, considering his own troubled past, could be a central part of the story.
There's also 'Potter and the Original'. This fanfiction is unique in that it focuses on how Harry Potter's values and the rather morally ambiguous nature of Klaus Mikaelson interact. It delves deep into the personalities of the characters, exploring how they might influence each other. For example, Harry's sense of justice might rub off on Klaus, while Klaus's street - smart and survivalist nature could teach Harry some new ways of dealing with threats.
In such a fanfiction, the plot could involve Harry being hidden from Klaus's enemies in the wizarding world. As he grows up, he discovers his true parentage through some magical or supernatural means. His connection to Klaus might give him unique powers, like enhanced strength and speed along with his magic. He could be caught in a war between the magical community that wants to keep the vampire - werewolf world at bay and Klaus's allies who want to bring Harry into their fold. Harry has to decide which side he truly belongs to and fight for what he believes in, all while trying to understand his complex heritage.