There could also be supporting characters like the character's best friend who stands by them throughout the pregnancy. This friend could be from a different house, which would show the unity that can exist across the Hogwarts houses in difficult times.
The father of the baby, if he is also a character in the story, could be another student. Maybe a popular Quidditch player or a studious Ravenclaw. Their different personalities would add to the story's complexity. For example, if the father is a very ambitious Slytherin, he might have different ideas about what to do compared to a more carefree Gryffindor.
The main characters are Draco Malfoy and Hermione Granger. Draco, a former Slytherin with a complex family background, and Hermione, the brilliant Gryffindor known for her intelligence and strong will.
Well, obviously Gaster is the central character as it's about his pregnancy. But often, other characters from the same fictional world might be involved. For instance, characters who are friends or colleagues of Gaster could be there to support or oppose the situation. It might also include characters who have some sort of special connection to Gaster's unborn child, like a potential mentor or an enemy who wants to harm the baby.
Obviously, Harry Potter is a main character. His friends like Hermione Granger and Ron Weasley are also often involved. They usually accompany Harry in his adventures around Hogwarts.
Obviously, Harry Potter himself is the central character. Then there are the Hogwarts teachers like Dumbledore. Dumbledore would likely play a huge role in Harry's upbringing, guiding him not only in magic but also in moral and ethical matters. Hagrid would also be an important figure, perhaps teaching Harry about magical creatures from a very young age.
Harry Potter himself is often a main character. Since the blood wards are related to his protection at Hogwarts, his actions and experiences are central. Hermione Granger might also be a key character as she is always involved in solving magical mysteries and could be trying to understand the blood wards better. Ron Weasley too could be there, as he is Harry's best friend and often gets involved in any Hogwarts - related adventures.
Harry Potter is often still a main character. He might be involved in the rebuilding efforts or mentoring the younger students. Hermione Granger could also be there, using her vast knowledge to help solve post - battle problems. Ron Weasley as well, perhaps starting a new business in Hogsmeade.
Obviously, Bella Swan and Edward Cullen are the main characters. Since it's about Bella being pregnant, they are at the center of the story.
Obviously, Quinn is a main character as she is the one who is pregnant. Finn might also be heavily involved as he was Quinn's boyfriend in the show and could play different roles in the fanfiction, like being a supportive partner or facing difficulties in dealing with the pregnancy.
Gale Hawthorne might also be involved. Since he has a complex relationship with Katniss in the original story, his reaction to Katniss's pregnancy could be an important part of the fanfiction. He might have feelings of jealousy or regret, or he could be a supportive friend in a different way.
Maybe there's also an old Hogwarts professor who has some knowledge about the phantom's existence. This professor could play a crucial role in guiding the students or trying to solve the mystery related to the phantom.