The sender of the howler could also be a main character, even if they are initially anonymous. As the story unfolds, their identity and motives become a central part of the plot. They could be a rival, a teacher, or someone with a grudge against Molly.
The plot might revolve around the mystery of who sent the howler. It could be an enemy trying to intimidate Molly or perhaps a misdirected howler that was meant for someone else with the same name. In the story, Molly then has to figure out the true sender and their intentions, which could lead her on an adventure.
Hermione would be a great addition. She could help Harry and Molly with any research they need to do, whether it's about magic spells or historical wizarding knowledge. Neville could also be introduced. He might befriend them and together they could work on projects to improve the wizarding world, like creating new spells for protection or better ways to grow magical plants. Additionally, Luna Lovegood could pop in from time to time with her unique insights and odd magical creatures.
In a fanfiction, the howler could have had a physical form beyond just a shrieking letter. It could be that when it arrived at Hogwarts, it took on the form of Molly herself for a brief moment. She could have given Ron a stern look and a lecture in person (sort of) before disappearing again. This would add a whole new level of drama and magic to the concept of the howler in the Harry Potter universe.
Maybe there is a bully in the story. If Molly learns a lesson about standing up for herself or kindness towards others, a bully character could be present. The bully could be causing trouble for Molly or other students, and Molly's experience with the bully is what makes her learn an important life lesson at school.
One possible fanfiction idea could be that Molly's howler in Harry Potter was actually a warning not just to Ron, but also a veiled threat to a dark wizard who was secretly infiltrating Hogwarts. Maybe this dark wizard had a plan to use Ron as a pawn, and Molly sensed it through her motherly instincts and magical awareness. So the howler was her way of sending a message to both Ron and the hidden enemy.
Well, Molly could have a range of reactions. She might be amused by the creativity, or perhaps confused by the complex plotlines. Maybe it even inspires her own writing!
Well, it could be that she broke some important rule or did something that really angered another character, and they decided to send a howler to give her a piece of their mind. Or perhaps it was a misunderstanding that led to the howler being sent to her.
I'm not sure specifically as I haven't read all of Molly Fletcher's novels. But usually, the main characters are those who drive the plot forward. They could be protagonists facing challenges, like a young person striving for a dream or a character dealing with a difficult situation in life.
His mother could send the howler. In the wizarding world, mothers can be quite fierce when it comes to family reputation and she might be unhappy with Sirius's actions or friends.
The main characters are obviously Harry and Molly. Harry, who is well - known from the original Harry Potter series, is often a central figure with his own set of traits and powers. And Molly, who might be a new character created specifically for this fanfiction or could be an existing character given a new role in this particular story.