Hermione Granger is always a popular choice. You can explore her further adventures in the wizarding world, like her research into new spells or her efforts to improve the lives of house - elves. Another is Draco Malfoy. There's a lot of potential to show his redemption arc in more depth or his post - Hogwarts life trying to make amends for his past actions. And of course, Harry Potter himself. You could write about his life as an adult, perhaps as a teacher at Hogwarts or his continued battles against the remnants of dark magic.
One popular character to focus on is Sirius Black. You could write a fanfiction that brings him back to life in some way and shows his reaction to the post - Voldemort wizarding world. He could mentor a new generation of students who are having trouble with the dark side of magic. Severus Snape is another. There are so many untold parts of his life that can be explored, like his time as a student and his early relationships. And Fred or George Weasley (or both). A fanfic could be about their continued pranks in the wizarding world after leaving Hogwarts, or how they use their joke - shop business to help the wizarding community in unexpected ways.
The Weasley twins are always fun to write about. Their pranks could be taken to a whole new level in fanfiction. For instance, they could create a prank that accidentally affects the entire academy, like a spell that makes everyone's robes change colors every time they sneeze. And then they have to find a way to reverse it before they get into too much trouble.
Hermione is a great character to focus on. If reborn in the Harry Potter world, one could explore how she would be different if she had some extra knowledge or skills from her past life. Maybe she could be even more brilliant in magic and solve problems faster, or she could use her modern - day knowledge to make changes in the wizarding world like introducing new study methods.
Harry Potter himself could be a central character. His courage and ability to face dark forces could be put to the test in the Twilight universe. Maybe he has to deal with a vampire coven that has some dark intentions similar to Voldemort.
One popular new character could be a young witch from a newly introduced family who has an extraordinary gift for potion - making. She might befriend Harry and help him with some difficult potions in his later years at Hogwarts. Another could be a wizard from a family that has a long - standing feud with an existing family in the wizarding world. His presence could stir up old rivalries and create new story arcs.
Albus and Scorpius are extremely popular. Their friendship and the unique dynamic between them, with Albus being a Potter and Scorpius being a Malfoy, offers a lot of room for exploration. Writers can delve into their insecurities, how they support each other, and how they deal with the expectations placed on them because of their families.
Harry Potter is definitely one of the most popular. Since he is the main character in the original series, fans often like to give him a second chance in various scenarios. Hermione Granger is also popular as she is so intelligent and fans might want to see her make different choices with a second chance. Another popular character is Draco Malfoy. His complex character and his family's situation make him an interesting choice for a second - chance story.
James Potter is often a popular choice. He's the leader of the Marauders, a talented wizard, and his relationship with Lily Evans is a major draw. His transformation from a bit of a troublemaker to a more responsible person is also an interesting aspect to explore.
Another popular character could be Teddy Lupin. Even though he's from the previous generation, he's often included in new - generation fanfiction. His unique situation as a werewolf and his connection to the Potter family make him an interesting character to explore, especially in relation to how he mentors the new - generation characters.
Draco Malfoy is also a common focus. Fanfiction might show a different side of him, perhaps if he had been born into a more liberal pure - blood family. His complex character and his journey from a bully to someone with more depth in the original series make him an interesting subject for new stories.
Natsu is a very popular character to focus on. His hot - headed and powerful nature can lead to all kinds of exciting storylines. Lucy is also a great choice. Her celestial spirit magic provides a lot of opportunities for different types of adventures, like exploring different spirit realms. And of course, Gray is popular too. His ice - make magic and his cool (pun intended) personality can be really fun to write about.