Obviously, Harry, James, and Lily should be central. But Sirius Black would be a great addition. He was James' best friend, so he could provide a lot of insights into their friendship and the time they spent together at Hogwarts. Also, Remus Lupin could be included as he was part of their group. He could add depth to the story by sharing his memories of James and Lily.
Neville Longbottom is a wonderful character to add. He has grown so much throughout the series and can be a great support to the trio. Dumbledore, even if in a ghost - like or memory form, can offer his great wisdom. Also, Draco Malfoy can be included in an interesting way. Maybe in fanfiction, he has a change of heart and teams up with the trio against a greater evil.
Hermione is always a great character to include. As a kid, she could be shown solving even more complex problems than in the books. Her intelligence and determination can drive the plot forward in fanfiction.
Luna Lovegood would be an interesting character to include. Her unique perspective on magic could help Harry and Molly in unexpected ways. For example, she might know of some strange magical creatures that are relevant to a mystery they are trying to solve. Hagrid is another great choice. His love for magical creatures and his big heart could bring a lot to the story. He could help Molly and Harry take care of some new and dangerous magical beasts that show up in the fanfiction.
Dumbledore could be included. Even though Harry is on his own, Dumbledore's wisdom could still be a guiding force, perhaps through memories or some magical means. Also, Hagrid. His knowledge of the magical creatures could come in handy for Harry in his solo adventures. Another character could be Luna. Her unique perspective might inspire Harry when he's facing difficulties alone.
In addition to the Potters themselves, there are often original characters created for the fanfiction. For example, there could be a wizard or witch who was friends with James and Lily at Hogwarts but was not mentioned in the original books. These characters can bring new plotlines and perspectives. Voldemort is also a crucial character in many of these fanfictions, as his actions are directly related to the fate of the Potter parents.
Dumbledore would be an interesting addition. He has a lot of knowledge and power, and his interaction with Merlin would be fascinating. Ron could also be included for some comic relief and his loyalty would be an asset in any adventure that combines the two universes.
Well, Sirius Black could be an interesting character to put in a 'Harry Potter Dursleys fanfic'. Since he was Harry's godfather, his presence could stir things up for the Dursleys. He might be furious at how they treated Harry and take some sort of action. Hermione and Ron could also be included. They could visit Harry at the Dursleys' and be shocked at the living conditions. Their reactions and how they interact with the Dursleys could make for an exciting plot. And of course, the Weasley family as a whole. Their warm and loving nature would contrast greatly with the cold Dursleys.
Obviously, Hermione herself is the central character. Harry and Ron are great additions as they are her closest friends and would surely be there to support her in the journey of finding and reconnecting with her parents.
Yes, there might be some extremely dark and out - of - canon fanfictions out there with such a disturbing premise, but it goes against the general nature of the original story where Harry's parents loved him deeply. However, in the vast world of fanfiction, people can create all kinds of strange and often inappropriate scenarios.
The main characters are James Potter, a young wizard with great potential. His father, who could be a well - respected wizard in the magical community, perhaps known for his contributions to some magical research or battles. His mother, a beautiful and intelligent witch, might be involved in various magical charities or have a special talent for divination. Their interactions and the influence they have on James are what drive the plot of the fanfiction.