Harry Potter is at the heart of it. But don't forget about Pansy Parkinson. In some fanfictions, she can be rewritten to have a different side to her and be part of Harry's harem. Then there's also Daphne Greengrass. Her family's status in the wizarding world could play a role in a story about a marriage contract harem, and she could be one of the characters vying for Harry's attention.
Sakura could also be involved. There might be fanfiction where Sakura enters into a marriage contract with Naruto, perhaps in an alternate universe where their relationship took a different turn. This could explore a more complex dynamic between them, different from the one - sided love Sakura had for Sasuke in the original.
Draco Malfoy is frequently in these fanfictions. His family's status in the wizarding world and his complex relationship with Harry and his friends make him an interesting addition to a story about a marriage contract potion. Ginny Weasley can also be a main character. Her relationship with Harry in the original series can be further explored or twisted in fanfiction involving the potion.
Well, Bellatrix Lestrange could be a character in these fanfictions. Since she was a very loyal Death Eater, in some dark and twisted scenarios, she might be involved in forcing Harry into a marriage on Voldemort's behalf. Another character could be Luna Lovegood. She might be in a story where she tries to use her unique magical insights to help Harry escape the forced marriage. And of course, Dumbledore might also play a role, either as a guiding figure for Harry or in some cases, having a more complex role where his actions might seem to lead to the forced marriage situation.
Harry Potter himself is often a common character. He might be the one who accidentally stumbles upon the hypnosis magic and ends up with a harem. Hermione Granger is also frequently included. Her intelligence could be used in different ways in the story, like helping to understand the hypnosis magic better or being an important part of the harem dynamic. Ginny Weasley is another character that can be part of the harem. She has her own strong - willed personality that can add interesting twists to the story.
Oliver Wood is another character that might be in such fanfiction. He's extremely passionate about Quidditch. In a harem - related Quidditch fanfiction, he could be the object of affection for some students who are attracted to his dedication and skill on the pitch. Also, the Weasley twins, Fred and George, could be involved. Their mischievous nature combined with their Quidditch skills might draw a group of followers or love interests.
Ron Weasley could be there too. He might be a bit more clueless at first about the hypno harem situation but would still be dragged into it. And of course, there could be some original characters created just for these fanfictions. They could be new students or mysterious wizards who are either causing the hypno or are part of the harem that forms.
Harry Potter himself is often a central character. Given his status as the hero of the original series, many fanfictions involve him in these complex marriage law - related relationships. Hermione Granger is also popular, as she's a strong and intelligent character. Her presence in a harem - like situation can lead to interesting relationship dynamics. Draco Malfoy is another one. His complex personality and his family's standing in the wizarding world make him a prime candidate for these types of fan - created relationships.
There could be pairings with minor characters too. For instance, Harry and Cho could be paired through a marriage contract. Their previous relationship in the original series was complex, and a marriage contract would add another layer of complexity. It could be a way to explore how they could overcome past issues and build a new relationship. Another minor character pairing could be Harry and Pansy Parkinson, which would create a whole new set of power dynamics and social situations within the wizarding world.
Hermione is a very common character paired with Harry in such fanfictions. Given their strong friendship in the original series, it's not a stretch to imagine a marriage contract situation between them. Their shared intellectual pursuits and adventures could form a strong basis for a relationship under a marriage contract.
Dumbledore could also play an important role. He might be in a position where he has to mediate between Harry and the families pushing for the marriage contract. Hermione and Ron could be there as Harry's friends, offering their support and advice during this difficult situation.