Well, he might grow up with a different set of values and magical education. The Greengrass family is known for their pure - blood status. Harry could have a more refined upbringing in terms of pure - blood traditions. He might also have a different relationship with the wizarding world at large, perhaps being more involved with the pure - blood society.
Obviously, Harry Potter is one of the main characters. He is the one being adopted into the Greengrass family. Then, the Greengrass family members are important. There are likely to be the parents of the Greengrass family, and the Greengrass sisters. We might see Astoria Greengrass and her sister (if she has one in the fanfic). These characters will play significant roles in Harry's new life and the development of the story.
His story would change a great deal. For starters, he might not have the same connection to the Dursleys. His early years would be filled with the Greengrass family's values and lifestyle. He could be more attuned to pure - blood politics from a young age.
One possible interesting plotline could be how Harry adjusts to his new family. Since the Greengrass family has its own traditions and values, Harry might struggle to fit in at first. For example, he could be unfamiliar with their social circles in the wizarding world. Another plotline could involve how his relationship with the Greengrass sisters develops. Maybe he forms a close bond with one of them and they go on magical adventures together, exploring parts of the wizarding world that were previously unknown to Harry.
The Grangers. Hermione's parents are Muggles, but if they were made aware of the wizarding world early on, they could adopt Harry. He'd have a stable, loving home environment and would also be exposed to Muggle knowledge, which could be really useful in his magical studies. For example, scientific methods could be applied to understanding some aspects of magic better.
One common theme is family honor. Fanfics often explore how the Greengrass family upholds their reputation within the wizarding community. Another theme is secrecy. Since the Greengrass family isn't as fully explored in the original series, many fanfics play with the idea of them having hidden secrets or agendas.
In the fanfiction world, Greengrass is often a Slytherin student. She usually comes from a pure - blood family, which gives her certain status and expectations within the wizarding world. In the context of rescuing Harry Potter, she might be a character with a strong sense of justice that goes against the typical Slytherin stereotype. She could have her own set of skills, like being an excellent duellist or having a deep understanding of certain types of magic that enable her to come to Harry's aid.
Yes, there are quite a few. Some explore a relationship between Daphne and Harry that is different from the main canon. You can find them on fanfic websites like Fanfiction.net or Archive of Our Own. Just search for 'Daphne Greengrass Harry Potter' and you'll get a list of stories to choose from.
Yes, there are likely some 'Harry Potter Marries Daphne Greengrass' fanfics out there. Fanfic writers often explore different pairings in the Harry Potter universe. You can try searching on popular fanfic websites like Fanfiction.net or Archive of Our Own.
Well, if Harry Potter was adopted into the Malfoy family in fanfic, his life would change drastically. He would be exposed to a world of luxury and privilege that he has never known before. However, he would also be under the watchful eyes of Lucius and Narcissa Malfoy. They might try to mold him into their idea of a proper pure - blood wizard. But Harry, being Harry, would likely resist some of their attempts. And his presence in the Malfoy family could also potentially cause a rift between the family and Voldemort, since Harry is Voldemort's nemesis.