In a Sirius Black as the Joker fanfiction, the relationships in the Harry Potter universe would be severely strained. His friends like Remus and James might struggle to understand or stop him. His relationship with Harry would be completely different. Instead of being a sort of protector, he could become a threat. And the wizarding world as a whole would have to face a new kind of enemy within its own ranks, one that doesn't play by the normal rules of magic and morality like the Joker doesn't follow the normal rules of society.
It would likely create a lot of chaos. Sirius Black is already a bit of a wildcard in the Harry Potter world. If he becomes like the Joker, the sense of safety at Hogwarts would be completely shattered. Students would be constantly on edge, not knowing what he'll do next. The teachers would have a hard time controlling him, and it could even lead to changes in the power dynamics between different houses.
This kind of fanfiction could introduce a new level of darkness. The Harry Potter series has its dark elements, but with Sirius as the Joker, it would be a different kind of dark. His actions could inspire other characters to either oppose him more vehemently or, in a more twisted way, be influenced by his newfound chaos. It might also change how magic is perceived, from a tool for good and defense to something that can be used for truly malevolent purposes.
In some fanfictions, Sirius Black time travels to the past and teams up with his younger self. They work together to expose the Death Eaters' plans earlier. This creates a really cool dynamic as the older Sirius has more experience and the younger one has more energy and impulsiveness.
It's possible in fanfiction, but it would be a huge departure from his character. Sirius Black is a Gryffindor, known for their courage and loyalty to the side of good. He has personal reasons to hate Voldemort, like the death of his friends at the hands of the Death Eaters. But fanfiction authors might create a complex backstory to justify his joining. Maybe they could write that he was under a powerful spell or was tricked into believing Voldemort had different intentions. Still, it would shock most fans who know the original Sirius.
Harry would likely be more confident. Sirius is a bold and brave character, and growing up with him would instill those qualities in Harry more strongly. He wouldn't be as meek as he was in the early days at Hogwarts.
Fanfiction about these three can take many forms. For example, there could be time - travel fics where Harry goes back in time and meets Regulus and Sirius when they were younger. This could lead to all sorts of interesting plot twists, like Harry trying to prevent Regulus from joining the Death Eaters in the first place. Or it could be a fic where Sirius survives and he and Harry explore the secrets of the Black family together, including things that Regulus left behind. There are also fics that focus on the emotional bonds between the characters, showing how the different personalities of Regulus, Sirius, and Harry interact and influence each other.
The relationship would add a new layer of complexity to the story. It could lead to new plotlines about Hermione's family history. There might be secrets within Sirius's family that now relate to Hermione. For instance, there could be a family heirloom that has special powers which Hermione now has a claim to. This could attract the attention of dark wizards who want to steal it. It would also change the dynamic at Hogwarts. Teachers might treat Hermione differently knowing she has a connection to the infamous Sirius Black, and some students might be jealous or curious about her newfound family connection.
Their relationship would likely become very close. Harry, who has always longed for a family, would finally have someone who truly cares about him like family. Sirius, on the other hand, would get to be the father - figure Harry needs. They would probably have a lot of heart - to - heart talks, sharing their joys and sorrows.
Sirius would probably be very worried and immediately try to help Harry. He might use some basic healing spells he knows.
Harry would likely be very suspicious of The Joker from the start. He's used to dealing with threats in his own world, and The Joker's erratic behavior would set off alarm bells. Hermione would probably try to study The Joker, looking for a logical explanation for his actions and a way to counter him. Ron, on the other hand, might be a bit more fearful at first but would still stand by his friends. They would initially approach The Joker with caution, trying to figure out if he has any magical abilities or if he's just a very strange Muggle who has found his way into their world.
In fanfiction, Harry Potter's magic might introduce a new cultural element. The wizarding world has its own traditions and values. This could influence the characters in the Marvel Universe. For instance, the concept of house loyalty from Hogwarts might be adopted by some superhero teams. Also, the magic could add new types of challenges. Magic - based threats might emerge that the Marvel heroes are not used to dealing with, like dark wizards or magical creatures.
Well, on one hand, it might add a new layer of complexity to the understanding of the Black family in the Harry Potter series. But on the other hand, if it's too extreme or not well - written, it can distort the overall perception. The original series presents the Black family as having a complex history with some dark elements, but 'sirius black sister abuse fanfiction' might take it to an extreme that doesn't quite fit with the general tone of the books. It could make new readers misunderstand what the series is really about.