Another character could be Blaise Zabini. He is also from a pureblood family. Fanfictions might pair him with Hermione as they explore the pureblood culture together. He could introduce Hermione to different aspects of pureblood society, and they might develop a friendship or something more as they interact.
Draco Malfoy is a very common character paired with Hermione. The contrast between their pure - blood and muggle - born backgrounds, along with their initial enmity, makes for a fascinating relationship to explore in fanfiction.
One common character paired with her could be Harry Potter. He might be working in Hermione's company, perhaps as her right - hand man in security or as an advisor on matters that involve the wizarding world's politics and power dynamics.
Harry and Ron are often still paired with her. Even if Hermione isn't human, they are her friends and they go through adventures together. Draco might also be paired with her in some stories. If Hermione is a non - human with special powers, Draco could be intrigued by her and they could develop an unlikely friendship or more. Snape could also be involved, maybe as a mentor figure to Hermione if she is a unique magical being.
One common character is Draco Malfoy. The idea of a marriage contract between Hermione and Draco creates a lot of interesting dynamics. Given their history of being rivals at Hogwarts, a marriage contract forces them to re - evaluate their relationship and often leads to a slow - burn romance as they get to know each other better.
Another pairing is Hermione and Draco. This is a more unexpected and often interesting pairing. In some fanfictions, they put aside their differences from the war and start to see each other in a new light, and they might work together on some post - war projects for the betterment of the wizarding world.
Harry Potter is often still a key figure. He might support Hermione's plans, or in some cases, be a bit skeptical at first but then come around. Their friendship could be a driving force in her journey to take over the world.
One common pairing is with Severus Snape. In some fanfictions, when Hermione goes back in time, she may interact with a younger Snape and they could form an unexpected bond. Another is with Tom Riddle. Their interactions can be really interesting as Hermione tries to prevent him from turning into Voldemort.
Other pureblood characters like Draco Malfoy would surely interact with her. Given her new status, Draco might be conflicted. On one hand, she's a 'mudblood' in his old view, but now as a rich pureblood, he might have to reevaluate his attitude towards her. And there could be other pureblood families' members who would either befriend or oppose her based on their family politics.
Harry Potter is often paired with Hermione in some fanfictions. Their strong friendship in the original series can be developed into a romantic relationship in fan - made stories. Another common character is Ron Weasley, as their relationship in the original has a lot of potential for different interpretations in fanfiction.
Hermione is surely a main character. In addition, there could be some older pureblood wizards or witches who serve as her mentors in this fanfiction. For instance, Narcissa Malfoy might be involved. She has her own complex character and her knowledge of the pureblood ways could be passed on to Hermione. And of course, Harry and Ron might also make appearances, showing their reactions to Hermione's new adventure in the pureblood training.