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.
The protagonist is often a popular choice. Their journey through time and the decisions they make can be explored in great depth. Also, any character with a mysterious past can be interesting. For example, a character who seems to know more about the time - related phenomena than they let on. Their backstory can be delved into and new storylines can be created around them.
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.
Harry himself is of course very popular as the story revolves around his second chance. Hermione is also often a key character as she can help Harry with her knowledge and planning. Another popular character is Dumbledore. His wisdom and guidance are crucial in many fanfictions, and in the context of a second chance, he can play an even more important role in mentoring Harry.
Gandalf is surely a popular character in such fanfiction. His wisdom and powerful magic would make him a central figure. He could be the one guiding the characters from both universes on how to deal with the new threats that emerge from the crossover. Hermione is also popular. Her intelligence and knowledge of magic could be very useful in this new combined world, and fans love to see her solve problems.
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.
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.
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.
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.
Harry Potter himself is often a popular character in these fanfics. After all, the idea of him having a second chance at things is very appealing. Hermione is also popular as she could use her intelligence in different ways with a second chance. And Draco Malfoy is quite popular too. People like to explore his character getting a second chance to break free from his family's expectations and become a better person.
Well, in many Harry Potter fanfictions, aside from the well - known characters, the author might introduce some original characters. So in 'A Chance in Time', there could be a new character who is the key to the whole 'chance in time' concept. However, it's also very possible that it focuses mainly on Harry and his friends. Maybe Harry discovers something about his past that gives him this 'chance in time' and he has to rely on Hermione's intelligence and Ron's loyalty to make the most of it.