Hermione Granger could be one of the main witches. She's extremely intelligent and powerful, and in the fanfiction, she might be involved in some secret magical research or adventures.
In many Harry Potter fanfics about the Witches of Salem, they are often portrayed as a mysterious and ancient group. They might be shown as having different magical practices compared to the witches in the Harry Potter universe. Some fanfics could depict them as having a more primal or earth - based magic, perhaps with stronger connections to nature and local folklore.
I'm not sure specifically as it's a fanfic. It might be about some secret that the witches in the Harry Potter world hold. Maybe it could involve a hidden magic, a clandestine society of witches, or a mystery related to a particular witch character.
I don't recommend fanfiction with such a disturbing concept as 'Harry Potter enslaves witches'. The 'Harry Potter' series promotes values like friendship, courage, and equality, and this idea goes against the positive spirit of the original work.
Harry Potter would likely be one of the main characters, as it is related to the Harry Potter universe. And of course, the witches in the coven would be main characters too. Maybe there's a head witch who leads the coven and plays a significant role in the story.
Since it's a fanfic, the main characters could be original witches created by the author. Or it might focus on some of the known witches from the Harry Potter series like Hermione (although she's a witch - wizard hybrid in a way), and expand on their stories in relation to the secret.
Yes, there are some popular ones. However, their popularity can vary greatly among different fanfiction communities. Some might gain popularity due to their unique take on the characters' relationships and how they blend the magical elements with the harem concept. But it's hard to point out just one or two as being extremely popular across all platforms as the fanfiction world is so vast.
In 'harry potter coven of witches harem fanfiction', it usually means taking the elements from the Harry Potter series like magic, Hogwarts, etc. and adding a unique twist. The coven of witches gives a sense of a group with their own powers and dynamics. The harem idea is where it gets really interesting. It could be about a character being surrounded by these witch characters, and their interactions, be it friendships that verge on romance or full - blown romantic entanglements, are explored in ways that the original story didn't cover.
They can play the role of mentors. Imagine a young Hogwarts student who is having trouble with a particular type of magic, and a Witch of Salem appears and teaches them an alternative way of approaching it. This shows how they can bring in new perspectives on magic.