One plot idea could be that Fem Danny Phantom and Vlad have to team up against a new powerful ghost that threatens both their existences. This forces them to put aside their differences and work together, leading to a grudging respect for each other.
One plot idea could be that baby Danny accidentally wanders into Vlad's lair. Vlad, instead of being his usual villainous self, is surprisingly gentle. He realizes that Danny's innocence might be a chance for him to change his ways. Maybe he tries to mentor Danny in a different, more positive way, teaching him about his ghost powers in a non - malicious manner.
One idea could be that Danny and Vlad are forced to team up against a new, powerful ghost enemy that neither can defeat alone. They start to understand each other better during the process.
Well, consider a plot where an ancient ghostly artifact surfaces that has the power to change the balance between the living and the dead. Both Danny and Vlad are interested in it for different reasons. Danny wants to protect the world from any harm it might cause, while Vlad wants to use it to gain more power. As they both race to find the artifact, they encounter various challenges and obstacles. Along the way, they might also have to face some of their own inner demons. Danny might have to deal with his fear of becoming like Vlad if he uses too much power, and Vlad might have to confront his loneliness and the reasons why he always tries to overpower Danny.
One idea could be that Danny and Vlad are forced to team up when a new, more powerful ghost threatens their town. They start off bickering like always but gradually learn to trust each other. Another could be a story where Danny gets stuck in a time loop and has to seek Vlad's help to break it, and in the process, they discover a long - lost family connection. A third idea is that Danny and Vlad are both turned into kids by a magic spell gone wrong, and they have to figure out how to reverse it while also dealing with the challenges of being a child again.
One idea could be a story where Danny and Vlad are forced to team up against a new, more powerful ghost threat. They have to put aside their differences and learn to work together, which is a big challenge given their history of animosity.
A fanfiction could explore what would happen if Maddie found out about Vlad's true nature and his feelings for her early on. She could use this knowledge to try and reform him, or she could be more cautious around him. For example, she might start to study his ghost powers more closely to find a way to protect herself and her family. This could lead to a series of tense encounters between them.
One aspect of Danny Phantom x Vlad fanfiction could be the exploration of their complex relationship. In the original series, they are adversaries with a lot of underlying tension. Fanfictions might focus on what would happen if they were forced to work together, perhaps in a situation where a greater threat emerges that requires both their powers. This could lead to interesting character developments as they learn more about each other.
One interesting storyline could be where Danny and Vlad are forced to team up against a common enemy. Maybe a powerful ghost that threatens both their existences. This would put their rivalry on hold and force them to use their combined powers.
A very frequent theme is the idea of redemption. Some fanfictions explore whether Vlad can be redeemed through his relationship with Danny. It's about whether Danny's goodness can rub off on Vlad or if Vlad is too far gone. There's also the theme of family, as Vlad sees Danny as a sort of surrogate son, and this adds a whole layer of complexity to their interactions. They can be like a dysfunctional family, with all the drama and emotional turmoil that comes with it.
One plot idea could be a team - up. Maybe Fem Pariah Dark has a change of heart and decides to help Danny Phantom fight a greater evil that threatens both their worlds. It would be full of action and interesting character dynamics as they learn to work together.