In a 'Harry Potter in a Custody Battle' fanfiction, it might be that Harry's muggle relatives and the wizarding community are in a custody battle. The Dursleys could claim they've been taking care of Harry all these years and have the right to keep him. But the wizarding world, like Hogwarts professors, might argue that Harry belongs with his own kind where he can learn magic and be safe from the threats only the wizarding world understands. There could be courtrooms filled with magic spells and arguments about what's truly best for Harry.
The key characters could be Harry's muggle relatives. The Dursleys have been his legal guardians in the muggle world for a long time. They might be fighting to keep Harry in their home. On the wizarding side, Hagrid could be important. He was the one who introduced Harry to the wizarding world. He might step in to ensure Harry is placed in a proper wizarding family or environment. Also, Hermione and Ron could play a role. They are Harry's best friends and would surely fight for Harry to be in a place where he can be happy and learn magic freely.
Well, it could be about Harry Potter getting into a battle to gain custody of something or someone. Maybe it's about him fighting for the custody of a magical creature or even a young wizard in need of protection. He might use his magic skills and the support of his friends to win the custody battle in this fan - made story.
Obviously, Harry Potter is a main character as the title implies he is the one fighting for custody. There might also be his friends like Hermione and Ron who could be helping him out in the battle for custody. Maybe the person or thing he is fighting for custody of could also be considered a main character in a sense, as it's the central object of the story.
Maybe Sirius gets help from some powerful wizards or witches who believe in his innocence. They might testify on his behalf in front of the wizarding authorities. Sirius also could show his strong emotional bond with Harry. He has always been there for Harry in spirit, and now he can be there physically to raise him, which convinces the authorities to give him custody.
One horror story could be when one parent spreads false rumors about the other to gain an advantage. For example, claiming the other has a drug problem without any proof. This not only affects the court's view but also the mental state of the accused parent.
Yes, there are likely fanfictions out there that combine elements of Harry Potter and the Battle of Helms Deep. Fanfiction writers often like to mash up different fictional universes. You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own.
Seek professional help early on. A family counselor or a mediator can be very useful. They can help in communication between the parents and also provide an unbiased view. In a custody battle, emotions run high and having an outside professional can help keep things more civil. For instance, if there are disputes about visitation rights, a mediator can help come up with a fair schedule that is acceptable to both parties, reducing the chances of a long - drawn - out and nightmarish legal battle.
If Voldemort gets custody of Harry in fanfiction, it would be a huge deviation from the original story. Harry would probably be exposed to a lot of dark and cruel things. Voldemort could try to break Harry's spirit and make him abandon his values. There might be a struggle within Harry between the good he has been taught and the evil that Voldemort represents. And the wizarding world would be in even more chaos as Voldemort would have more control over the one person who was seen as the hope to defeat him.
Perhaps James has more resources to take care of Harry. He could have a better living situation, more financial stability, or a stronger support system. In fanfiction, this can be a way to create a new dynamic for the characters, with James being the sole provider and protector for Harry.