They interact by following the established rules and precedents of the wizarding legal system. They would present cases in wizarding courts, using magic - based evidence and arguments. For example, they might use a Pensieve to present memories as evidence.
In fanfiction, Harry Potter's lawyers interact with the wizarding legal system quite intricately. They are part of a hierarchical structure within the legal framework. They start by researching relevant laws in the vast libraries of the wizarding world, like those in Hogwarts or the Ministry of Magic. They communicate with magical law enforcement, such as Aurors, when building cases. They also have to deal with the political side of the legal system. For instance, if a case has implications for the power balance between different wizarding families or factions, the lawyers have to be aware of the political ramifications. And when presenting cases, they use the unique procedures of the wizarding courts, which may involve magical duels to prove a point or truth - revealing spells.
In fanfiction, dragons could interact through treaties. There could be a treaty between the dragon family and the wizarding world that outlines boundaries and rules. For instance, the dragons agree not to attack wizard settlements if the wizards promise not to hunt them for sport. However, when dark wizards start breaking the treaty, the dragon family has to decide whether to side with the good wizards or stay neutral.
The 'Harry Potter lover of Apollo' could interact in a very unique way. Since Apollo is often associated with music and poetry in Greek mythology, this character might use music as a form of magic in the wizarding world. They could charm magical creatures or even unlock hidden passages in Hogwarts with their musical spells. Also, they would probably be more interested in the history of magic that has connections to ancient Greek magic, if such a thing exists in the fanfiction. They might study ancient scrolls in the Hogwarts library, looking for references to Apollo or other Greek gods, and try to adapt that knowledge to their current magical studies.
One key issue could be copyright infringement. Since fanfiction is based on the existing Harry Potter universe, lawyers in the fanfiction might deal with how much creative freedom the fanfic writer has without violating the original copyright. Another could be defamation within the context of the fan - created story world. If a character is portrayed in a way that could be considered slanderous in the fictional legal framework, it might be something the lawyers handle.
She would probably be seen as a bit of an oddity. Since she's a fan of Captain Marvel, she might try to introduce some of Captain Marvel's concepts to the wizarding world. For example, Captain Marvel's sense of justice is very straightforward. Fem Harry Potter could start advocating for a more cut - and - dried approach to dealing with wrongdoers in the wizarding world. This might not go over well with some of the more traditional wizards who are used to the complex politics and gray areas of magic law.
As the story progresses, they start to collaborate. They use their unique skills to help each other out. Harry might use his magic to protect Rogue from certain threats, while Rogue could use her combat skills and mutant powers to assist Harry in battles. A lot of fanfictions explore how they learn from each other's strengths and weaknesses, like Harry learning about Rogue's experiences with being an outcast which he can relate to as a wizard in a Muggle - dominated world.
The half - fae characters could use their fae abilities to enhance existing magical practices in the wizarding world. For example, they might use their fae - inspired flight skills to improve on broomstick flying techniques. Or they could use their natural charm, which is a common fae trait, to negotiate better deals in Diagon Alley.
In fanfiction, Harry Potter characters might encounter Pokemon in the wizarding world. The concept of familiars could be blended, with a Pokemon acting as a familiar for a wizard or witch. For example, a wizard could bond with a Pikachu in a similar way they would with an owl or a cat familiar. This creates unique storylines where magic from the Potterverse and the powers of Pokemon collide.
They might interact as allies. For instance, Itachi's combat skills and strategic mind could help Harry in battles against Voldemort's forces. Harry, in turn, could introduce Itachi to the magic of the wizarding world, like spells that could enhance Itachi's abilities further.
Some fanfictions explore a more complex relationship. Maybe Lucius has a secret prophecy about Harry that makes him act in strange ways towards him. He might be torn between his loyalty to Voldemort and this new - found interest in Harry, which causes a lot of internal conflict and very different interactions with Harry compared to the original books.
They might interact through magic. For example, fem Harry Potter could use her wand to communicate with mermaids underwater. Or mermaids could use their own magic to create a connection with her on land.