Another character that could be common is Charlie Weasley. Since he works with dragons in Romania, he can bring a lot of knowledge about dragons to the fanfiction. He might be called back to Hogwarts to deal with a dragon emergency, or be the one to introduce a new type of dragon to the Hogwarts students.
Hermione Granger is also quite popular. Her intelligence and thirst for knowledge can be translated into her being a great magic - user in the D&D - inspired scenarios. She could be the one to decipher ancient spells or find hidden passages in a dungeon.
In Harry Potter fanfiction, the Chinese Fireball is also a frequently used type of dragon. It has a unique appearance with its red and gold scales, which makes it very appealing to writers. Some fanfictions might also feature the Swedish Short - Snout, which is known for its ice - cold breath in the official lore and can be used in interesting ways in fan - created stories, like being part of a wintry magical adventure.
Obviously, Harry Potter himself is very common. He's the central character in the original series, so fanfiction often continues his story or reimagines it. Hermione Granger is also a frequent character. Her intelligence and strong - willed nature make her a great focus for many different storylines. Draco Malfoy is another popular one. Writers like to explore his character further, perhaps showing a more complex side to him than in the original books.
Harry Potter himself is very common. After all, he's the main character in the original series and is likely to be at the center of any apocalyptic events in the fanfiction. Hermione Granger is also frequently seen as she's smart and resourceful, which are great traits in an apocalypse. Ron Weasley is another one, as he's Harry's loyal friend and has his own set of skills.
The new generation of students at Hogwarts are very common in these fanfictions. Characters like Teddy Lupin, who has his own unique backstory being the son of Remus Lupin and Nymphadora Tonks. Also, the Weasley - Potter clan members are frequently seen. And in some fanfictions, there are original characters created by the authors, who interact with the well - known Harry Potter characters and add new dynamics to the story.
The main trio - Harry, Ron, and Hermione - are very common. They are the protagonists of the original story and their presence in Malfoy Manor fanfiction can drive the plot forward. Draco Malfoy is an obvious choice as well, as it is his home. Additionally, Lucius Malfoy could be a prominent character. His role as a Death Eater and a father figure in the Malfoy family can add depth to the story. Some fanfictions might also include Luna Lovegood. Her unique perspective on magic could be useful when dealing with the strange and often dark magic associated with the Malfoy Manor.
Ron Weasley is another character that frequently shows up. His insecurities about his academic abilities compared to Harry and Hermione can be explored further in relation to the owl results. For example, he might be really disappointed if his results are much worse than his friends', or he could be overjoyed if he manages to do better than expected. And of course, Draco Malfoy can also be a central character. His family's expectations and his own desire to outdo the Gryffindors could be tied into his owl results in interesting ways.
Snape is often a central character as he was the one teaching Occlumency in the original series. Harry Potter also frequently appears since he was the one receiving the lessons. Hermione might be included as well, as she is always eager to learn new magic and could be interested in Occlumency.
Harry Potter himself is of course very common. He's usually the central figure in these fanfictions. Hermione Granger is also often included as she is Harry's friend and a brilliant witch. Ron Weasley too, as he's part of the trio. Sirius Black might also be a common character since he has a connection to Azkaban.
The Marauders, James, Sirius, Remus and Peter, are often seen in these fanfictions. Since Harry is reborn in the past, he might interact with his father and his friends in a whole new way. This can lead to some really interesting storylines, like Harry helping them with their Hogwarts adventures or even preventing some of the bad things that happened to them later on.