Ron and Hermione could be main characters. They are Harry and Ginny's closest friends. Hermione might offer her vast knowledge of magic to help with any problems the baby has, like if there are some strange magical symptoms. Ron could be there for comical relief, making jokes about how Harry has become a proper family man now.
Neville could also be an important character. He has grown to be a strong and respected wizard. He might visit the baby and share his own experiences of growing up in a post - Voldemort wizarding world. He could also offer some plants from his greenhouse as gifts for the baby, which might have some special magical properties to protect the baby.
Well, clearly the main characters are baby Harry and baby Ginny. Harry, the famous Boy - Who - Lived, and Ginny, who will grow up to be an important part of Harry's life in the Harry Potter series. As babies, they are the focus, and the fanfic likely explores their early days and any special moments or relationships they might have at that young age.
Obviously, Harry Potter is one of the main characters. He is a hero in the wizarding world. Ginny Weasley - Potter, his wife, is also a main character. She is from the Weasley family and has her own charm and strength. And of course, their baby James Potter, around whom the story of this fanfiction is likely to revolve. His growth, development, and the events that happen to him will be the focus.
The main characters are obviously Harry and Ginny, as the story revolves around their baby. Their baby is also a central character, even though it's a new - born or a young child. And of course, there could be other characters from the Harry Potter universe making appearances, like Hermione and Ron. They might be the baby's godparents or just come to visit and offer their help and advice to Harry and Ginny.
Neville could be another important character. He could be like a godfather to their children, teaching them about Herbology and sharing his own experiences of growing up in the wizarding world. Luna could also be involved. She might bring some of her unique and dreamy ideas to the family, like introducing the children to some strange but fascinating magical creatures she discovered. And of course, the Weasley family as a whole would be very much present, with Molly Weasley spoiling the children with her delicious magical cooking.
Ginny herself would obviously be a main character, even as a baby. Then Harry, Ron, and Hermione are likely to be main characters as well. They are her friends and would be the ones most likely to try and solve the problem of her being turned into a baby. They would be involved in taking care of her and finding a way to reverse the transformation.
Hermione might be initially shocked but would quickly offer her support. She's always been there for Harry and Ginny, and with her intelligence, she could help them come up with plans to keep the baby safe.
Ron Weasley could be included. His friendship with Harry and his own skills (even if he's not as good as Harry or Ginny at Quidditch) could bring some comical moments. He could be the team's cheerleader or the one who always has a joke to tell in the locker room to ease the tension before a big match.
They would become more protective of each other. With a baby in the picture, their love would be deeper as they are now a family. Harry, who has always been a bit of a lone hero, would be more cautious in his actions as he has a family to think about. Ginny, on the other hand, would be more nurturing towards Harry as well as the baby.
It could be a story about the baby's special abilities. Since Harry and Ginny are both powerful wizards, their baby might inherit some extraordinary magic. The fanfiction could explore how they discover and help the baby develop these powers, like the baby showing signs of being able to communicate with magical creatures at a very young age.
A new dark wizard could emerge in the wizarding world. This wizard might be jealous of Harry's fame and power and think that by getting to Lily, he can gain some sort of advantage. He could try to steal Lily's magic or use her to spread fear in the wizarding community.