Obviously, Harry and Ginny are the main characters. Their kids would be important characters too. For example, James, Albus, and Lily. Then there could be their friends like Ron and Hermione, who might be the godparents or just good friends who are always around to give advice or help out.
There might also be some new characters created specifically for the fanfiction. Maybe a new neighbor in their wizarding village who has some mysterious past and somehow gets involved in the lives of Harry and Ginny's family. Or a classmate of one of the kids who causes some trouble or becomes a good friend.
Well, one possible plot could be that the kids start showing signs of magic very early and Harry and Ginny have to figure out how to guide them properly. Maybe one of the kids has a really powerful and unique magical ability that attracts unwanted attention from dark forces.
Sometimes, even characters like Luna Lovegood show up. She could introduce the kids to some of the more out - there aspects of the wizarding world, like strange magical creatures that she has a special knowledge of. Her unique perspective can add a touch of whimsy to the fanfiction stories.
The main characters are Harry and Ginny for sure. But it's also possible that some of the villains they faced in life, in a reformed state, could be part of the story. For example, Draco Malfoy could be there, having had a change of heart in the afterlife. This would add an interesting dynamic to the story as they all interact in this new realm.
The main ones are Harry and Ginny. But Fleur and Bill could be involved as well, sharing their own wedding experiences with the couple. Ginny's brothers other than Ron, like Percy, would be there in their formal robes. Percy might even give a speech at the wedding. Cho Chang could be an unexpected guest, showing that there are no hard feelings between her and Harry. And then there are all the Hogwarts professors, like McGonagall, who would be there to bless the union and make sure everything runs smoothly in the magical aspects of the wedding.
Ron and Hermione would surely be important supporting characters. They are Harry and Ginny's closest friends. Ron could be there for the comic relief and also to offer his practical wizarding skills. Hermione would use her vast knowledge to help Harry and Ginny in any situation, like when they need to research a strange magical occurrence in the post - war wizarding world.
Obviously, Harry and Ginny are main characters. Harry, with his knowledge of the future events and his skills as a powerful wizard. Ginny, who is also a talented witch. And then, of course, the Marauders - James Potter, Sirius Black, Remus Lupin and Peter Pettigrew. They are the ones being taught, so they are also central to the story.
Wolves could be likely. Wolves are known for their strong pack mentality and could raise Harry with a sense of loyalty and family. They could teach him how to hunt and protect himself.
Definitely the Weasley family. Molly and Arthur Weasley would be very much involved. Molly would be all excited about the wedding preparations, fussing over Ginny's dress and the food for the reception. Arthur would be there to offer his support and probably share some interesting wizarding stories. Ron and Hermione would also be there. Ron as Harry's best friend would be part of the pre - wedding jitters and celebrations. Hermione would be helping Ginny with all the details, like choosing the right flowers and making sure the wedding venue is decorated perfectly.
They are likely to meet their future selves. This could be a very strange and enlightening encounter for both of them. They might also meet their descendants, like their children and grandchildren, which would be a heartwarming experience.
One possibility could be centaurs. Centaurs are intelligent and have their own code of ethics. They could raise Harry with a deep understanding of nature and the stars, which would give him a different kind of wisdom.