Obviously, Harry Potter would be the central character. But the Addams family members like Gomez and Morticia would play crucial roles as his new family. Wednesday Addams could be an interesting character in relation to Harry. She has her own dark and mysterious side, and she might either be a great friend or a bit of a rival to Harry in this new setting.
Another character that could be important is Sirius Black. If he finds out that Harry is being raised by the Addams family, he might have mixed feelings. He could be worried at first but then realize that Harry is in a unique and perhaps safer environment. His relationship with Harry in this fanfiction could be explored further, especially considering the differences between the wizarding world he knows and the Addams family's world.
It would be really interesting. Harry would grow up in a very different atmosphere. Instead of the strict but loving environment at the Dursleys, he'd be in the spooky and unique Addams family setting. He might learn some very unusual magic from them, and his personality could be a blend of the Addams' eccentricity and his own Gryffindor courage.
If Harry Potter were raised by the Addams family in fanfiction, his style of dressing would be completely different. Instead of the traditional Hogwarts robes, he might be seen in something more gothic, like the Addams family's style. Also, his sense of humor would be darker. He'd probably find the pranks at Hogwarts a bit too tame compared to what the Addams family gets up to.
Harry's personality would become more self - assured and unapologetically different. The Addams family's environment would teach him not to conform to the norms of the wizarding world. He would be more open - minded about different forms of magic and creatures. For instance, he might not be as quick to judge dark creatures like werewolves or vampires as the rest of the wizarding community. Instead, he would approach them with the same level - headedness and curiosity that the Addams family shows towards all things unusual. This would make him a bit of an outcast in some ways, but also a very interesting and unique figure in the wizarding world.
One idea could be that the Addams family visits Hogwarts. Wednesday could be intrigued by the Dark Arts classes and start causing some spooky chaos among the students. She might even try to out - do Draco Malfoy in being menacing.
Morticia would likely be intrigued by Harry. She might be drawn to his mysterious past in the wizarding world and his magical abilities. Gomez, on the other hand, would probably be excited to have a new family member to share his adventures with. Wednesday might see Harry as an interesting addition, someone who could bring a different kind of darkness to the family. And Pugsley might look up to Harry, especially if Harry shows him some cool magic tricks.
Harry Potter and his friends would be both shocked and intrigued by the Addams family. Ron would be constantly freaked out by their strange habits, like Gomez's love for knives and Morticia's long black hair that seems to have a life of its own. Hermione, however, would be eager to learn about their family magic, if they have any. She might try to study it like she does with other forms of magic in the wizarding world. And Harry would probably be a bit cautious but also curious, seeing as he has his own experience with dark and strange things.
The characters can interact in many ways. For instance, Harry Potter could visit the Addams Family mansion. He might be a bit shocked at first by the spooky decor and the family's rather unusual habits, but he could also find common ground. Harry has dealt with his fair share of dark and strange things, so he might be more accepting than others. On the other hand, Wednesday Addams could visit Hogwarts. She would likely be unimpressed by the 'normal' magic and might try to find the darker corners of the school and the secrets that the other students are too afraid to explore.
The Addams family could fit into the wizarding world by bringing their own sense of style and values. Their mansion could be a place where students go for a different kind of magical experience. They might hold parties where they showcase their strange magical artifacts. In terms of the Hogwarts houses, they might not fit the typical mold. Wednesday could be a unique Slytherin who doesn't care about the pure - blood - mania but rather about her own personal power. Pugsley could be a Hufflepuff who is loyal to his family's odd ways. And the family as a whole could contribute to the diversity of the wizarding world.
Obviously, Harry Potter is the main character. He is the one who is raised in Hell in this fanfiction.