His childhood friends are also common main characters. They might be characters who have known Harry since they were kids and their relationships are explored in the fanfiction. They could be excited to see him again and have all kinds of adventures planned for when he's back.
It could also include some of the Hogwarts professors as main characters. For example, Professor McGonagall, who has always been like a mother figure to Harry. Her wisdom and guidance would be crucial for Harry as he comes home to Hogwarts or the wizarding world in general. And Dumbledore, even if he's passed away, his influence could still be felt strongly throughout the fanfiction.
Ron Weasley is also popular. He could be a source of comic relief as well as a loyal friend in the new story. If Harry is reborn into a different family or situation, Ron might be one of the first to notice the changes in Harry and help him blend in or deal with any difficulties that come his way.
One possible plot idea could be Harry coming home to his hometown after a long tour and reuniting with his childhood friends. They might have a big party to celebrate his return and he could share all his amazing experiences from the tour.
Obviously, Harry Potter and Severus Snape are the main characters as it's in the title. But often, other characters like Hermione Granger and Ron Weasley are also included. Hermione might play the role of the mediator or the one who helps Harry and Snape understand each other better. Ron could be initially skeptical of their new friendship but later come around.
Dumbledore can be a significant character in such fanfictions. He could be seen as a guiding figure, perhaps leaving behind some cryptic messages or prophecies that are relevant to Harry and Hermione's married life. His wisdom would be a great asset in helping them navigate the challenges they face. Also, Ginny Weasley might be included, either as a friend or as a character with her own sub - plot related to their relationship.
Well, of course, their friends like Hermione and Ron are often included. Hermione might offer her wisdom and advice on various matters, whether it's about dealing with a difficult spell or handling family finances in the wizarding world. Ron could be there for some comic relief and also as a loyal friend to Harry.
Another possibility is that the fanfiction could introduce new characters who play a major role in the 'coming home' story. They could be new vampires or humans who have a connection to the original Twilight characters. For instance, a new vampire who was turned while Bella was away and now she has to deal with this new presence when she comes home, and this new character could bring a whole new set of conflicts and relationships into the story.
The Mandalorian warriors themselves are often main characters. Their unique armor and combat skills make them interesting protagonists.
Definitely Bella is a must - have character. Edward, as her love interest in the original, is almost always there. Jacob, being an important part of Bella's life in the books, is also frequently in fanfiction. Additionally, the Volturi characters like Aro, Caius, and Marcus can be main characters in some fanfictions. These powerful vampires can bring a lot of drama and conflict to the stories, especially when their laws and the Cullen family's existence are involved.
Obviously, Little Bill himself is a main character. His family members like his mother, father, and grandparents often show up in fanfiction. His friends from the neighborhood or school, such as Fuchsia, also frequently appear as they are important in his daily life.