There's also PotterFan99 who writes some amazing regulus black iii fanfiction. Their story 'Regulus' Last Stand' is really good. It shows Regulus in a very heroic light and also has some great world - building elements within the fanfiction universe.
Regulus Black was a member of the Black family. He was initially a Death Eater, following in the footsteps of Voldemort. However, he later had a change of heart. He discovered Voldemort's Horcruxes and tried to destroy one. He left a note for Kreacher, his house - elf, asking Kreacher to lead Harry Potter to the locket Horcrux. His actions showed that he was brave in the end, trying to make up for his past mistakes in following the Dark Lord.
The Death Eaters could be antagonists. Even though Regulus turned against them, they might not forgive his betrayal and try to harm him or the school where he teaches. They could send spies or launch attacks to get revenge.
In some fanfictions, the mother could be an original character created by the author. This allows for a lot of creative freedom in developing the backstory and relationship dynamics.
Obviously, Regulus Black is a main character. He's the central figure around whom the story usually revolves. The howler can also be considered a kind of 'character' in a sense, as it often has a significant role in driving the plot forward. Sometimes, other characters from the Harry Potter universe like Sirius Black might also make an appearance as they are related to Regulus.
It could be a power - hungry Slytherin who doesn't like that Regulus is showing an interest in Gryffindor values. This Slytherin might see it as a betrayal to their house and try to stop Regulus by any means necessary, even if it means using dark magic.
In some fanfictions, Regulus Black's involvement in Quidditch could be linked to his family's expectations. The Black family might have certain standards for him in the sport, either pushing him to excel or causing him internal conflict as he tries to balance his own love for the game with their demands.
Regulus Black was a complex character. He was once a Death Eater but later had a change of heart. He discovered Voldemort's Horcrux secret and tried to destroy one. He sacrificed himself in the process. His story shows that people can break free from the dark path they initially chose.