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.
It really varies. In some fanfictions, Harry wins because of his natural talent and the power of love and friendship that he has on his side. He has his Gryffindor courage which gives him an edge in the fight.
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.
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.
In some cases, Snape wins. He has years of experience, knowledge of magic, and a sharp intellect. He can often see through Harry's attempts to outwit him and turn the situation around to his advantage. For example, he might use his knowledge of potions to create a situation where Harry is at a loss for words.
It really depends on the writer's intention. Sometimes Bella wins if the story is about her growth and empowerment. For instance, if the fight is about her independence, she might stand her ground and make Edward see her point of view.
Yes, it could be. It's not a typical concept we usually hear about. Fanfiction usually focuses on new adventures or relationships for Harry Potter, but the idea of him 'fighting' fanfiction is quite novel.
One common scenario could be when the mom can prove she provides a more stable and nurturing environment for the child. This might include having a better home setup, a reliable income, and a track record of being actively involved in the child's upbringing.