In this fanfiction, the Delacours might rescue Harry by using their knowledge of the wizarding world outside of Hogwarts. They could have some secret passages or allies that Harry wasn't aware of. For instance, they could lead Harry through a hidden route in the French wizarding community that the enemies don't know about.
Obviously, Harry Potter himself is a main character as he is the one being rescued. Then there would be the Delacours, mainly Fleur Delacour. She is a strong and resourceful witch. Her family members, like her sister Gabrielle or her parents, could also be involved in the rescue. They might work together as a family to save Harry.
Well, it could involve Harry growing up with the Delacour family's unique culture. Maybe he'd learn different kinds of magic that the Delacours are known for. He might also have a different personality, influenced by their flamboyant and refined ways.
Well, in a 'Harry Potter adopted by Delacours' fanfic, it could be really interesting. Harry would be part of a family that has a different set of values and customs. The Delacours might train him in unique ways of magic that are more in line with Beauxbatons. He could get to know the Veela heritage better, and perhaps it would give him some advantages in his magical abilities. Also, there could be new storylines around his interactions with the Delacour family members and how they deal with the fame and danger associated with Harry.
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.
She would likely have a different view of family. Growing up with the Delacours, she would have a more flamboyant and loving family environment. This would make her more confident in showing affection and relying on family support. In contrast, the original Harry had a rather lonely childhood until he discovered the wizarding world. Her relationships with others would also be different. She might be more diplomatic, having learned from the Delacour family's social skills, which could lead to different interactions with characters like Snape or Dumbledore.
One plot idea could be that she grows up learning the unique magic and culture of the Delacour family. Maybe she has a special bond with Fleur and they train together for some wizarding tournament. Another idea is that she discovers secrets about her past that are different from the original Harry Potter story because of her upbringing by the Delacours.
One common theme is the clash of different worlds. For example, when Harry Potter is rescued in a crossover with another universe, like the Star Wars universe, there's a lot of focus on how the magic of Harry's world interacts with the technology and different species in Star Wars. It's about two very different concepts trying to coexist.
One possible plot could be that Harry is wrongly accused of a crime in the wizarding world, perhaps something related to dark magic. The police, who might be a new magical law enforcement unit, rescue him from an angry mob. They then help him clear his name by finding the real culprit, who could be a Death Eater in disguise trying to frame Harry to cause chaos in the post - Voldemort era.