Yang, Ruby's sister, is also very likely to be in this fanfiction. Their sisterly bond could be shown in a new light with Ruby kissing her as a way of showing deep family love. Also, Pyrrha could be involved. She was a popular and important character in RWBY, and her connection with Ruby could be developed through the kisses.
Weiss could be one of the characters. Since she's part of Team RWBY and has a complex relationship with Ruby, it would make sense for her to be involved. Another one might be Blake. She has her own story arc and her relationship with Ruby could be explored through these kisses.
Perhaps the fanfiction explores Ruby's relationships with the Vale girls in a more romantic sense through these kisses. It might be set in a scenario where Ruby realizes her deeper feelings for them and uses kisses as an expression of that. For example, it could be part of a coming - of - age story for Ruby where she discovers new aspects of her emotions towards her friends.
Definitely her team members Weiss, Blake, and Yang. Since they are always by Ruby's side in the original RWBY series, they would play important roles in this fanfic as well. They might be the ones to first notice Ruby's change and try to help her understand and control it.
Well, obviously Ruby herself. Then there's her teammates Weiss, Blake, and Yang. Depending on the nature of the relationship in the fanfiction, Yang might be deeply affected if it's a family - like bond that's breaking. Weiss could be involved in trying to mediate or give her two cents on the situation from her logical perspective.
Well, her sister Yang would definitely be one of the main characters. Yang would be very protective of Ruby and would try to help her in any way she could. Weiss would also be important. She might use her intelligence and Dust - related skills to assist Ruby. And Blake, with her stealth and combat skills, could be crucial in protecting Ruby and guiding her through difficult situations.
One character could be Nora. Nora is energetic and fun - loving, just like Ruby in some ways. Their combined energy could make for a very lively threesome scenario in fanfiction. Ren might also be a candidate. Ren's calm and collected nature would contrast well with Ruby's more exuberant personality. Together with another character, perhaps Weiss, they could form an interesting threesome. Also, Emerald could be in a threesome with Ruby. Emerald has her own motives and a somewhat complex personality. Her interactions with Ruby, especially in a threesome situation, could add a lot of depth to the fanfiction.
In some cases, new original characters might be introduced. These could be other hunters or huntresses who have a connection to the source of Ruby's darkness. They could either be helping Ruby or be part of the problem. Maybe they are also victims of the same dark power that is corrupting Ruby and they both have to find a way out together.
Well, Weiss could be one of the main characters. She might initially be skeptical of this 'new' Ruby but then grows to accept and rely on her. Their relationship could be full of bickering at first but then develop into a strong friendship.
Well, Weiss would likely be one of the main characters to interact with Ruby. They have a complex relationship in the original series, and in this fanfiction as Ruby is a big sister figure, Weiss might come to her for advice on things like family expectations or her own growth as a Huntress.
In addition to the obvious ones, Glynda could play a role. As an associate of Ozpin, she may have some interactions with Ruby. Also, the villains in the RWBY universe might target Ruby more because of her new connection to Ozpin. So characters like Cinder or Salem could potentially interact with Ruby in the context of this fanfiction, either directly or through their minions. This would add a whole new layer of danger and intrigue to Ruby's story.
Well, Ron is a given. He's Hermione's significant other, so he'd be deeply involved in the whole process. Luna Lovegood might also make an appearance. She has an unique perspective and could bring some calmness and different kind of support. And don't forget about Hagrid. He has a big heart and might come to offer his congratulations and well - wishes in his own, endearing way.