Perhaps there is a knight or a loyal servant who uses the roses in some way to serve the queen. They could be another main character, as their actions and loyalty are often important elements in fanfiction stories like this.
Obviously, the Dragon Queen herself is a main character. She is likely to be a powerful and complex figure in the fanfiction.
One popular 'Dragon Queen Roses for the Queen' fanfiction might be the one where the main character uses the roses as a symbol of loyalty. In this story, the roses are enchanted and play a key role in protecting the queen.
The swan queen is surely one of the main characters. She is probably the central figure in the story with her own motives and goals related to the dragon. The dragon itself is also a main character as it is the object of being tamed. There might be side characters like the swan queen's advisers or friends who could be involved in her journey to tame the dragon. For example, there could be a wizard who gives her advice on how to approach the dragon.
There could also be side characters like the dragon master's trusty dragon sidekick. This dragon might have unique abilities that help the dragon master in his adventures against the ice queen. And on the ice queen's side, she might have some ice golems or frost spirits that serve her.
There might be other Towergirls characters as well. Maybe some of her loyal followers or servants could be important characters in the fanfic, depending on the plot.
In the 'Horde of the Dragon Queen Novel', the main characters probably include brave warriors who are set on fighting the dragon - led horde. There might also be mages or other magically - inclined characters. Additionally, there could be leaders within the horde itself that play important roles in the story. However, without reading it thoroughly, it's hard to name specific ones.
Given that I haven't had the chance to read 'the dragon queen and her mates novel', I can only assume the main characters. Clearly, the dragon queen is a main character. Her mates are also likely to be key players. They could be dragon - like beings as well or perhaps other magical creatures. Their individual traits, such as strength, intelligence, or special powers, might be explored throughout the story. There could also be secondary characters who interact with them and influence the plot.
There could be some of Harry's friends who might play a role. They could be the ones who encourage Harry to meet the Queen or who give him advice on how to behave in front of her.
Obviously, the queen is a main character. She is likely to be the central figure around which the story revolves. There might also be characters who oppose her, like rebel leaders or heroes trying to overthrow her. And then there could be her confidants, those who support her and help her maintain her rule.
Another character that might be a main character in Naruto no life queen fanfiction could be Kakashi. His experience and wisdom could be crucial in dealing with the situation involving the no life queen. He could be the one guiding Naruto and the others, providing insights and strategies. Plus, his own backstory and abilities could interact in unique ways with the new elements introduced by the no life queen in the fanfiction.
The Red Queen is the main focus. But in RWBY, Nora Valkyrie could be a significant character in the fanfiction. Her energetic and sometimes comical nature could add an interesting dynamic to the story with the Red Queen. Ren is also likely to be part of it, as his calm and collected personality might balance out the more flamboyant or mysterious aspects of the Red Queen. And Cinder Fall could be a major character as well. Her villainous nature could create conflict with the Red Queen and the RWBY team, leading to intense battles and power struggles in the fanfiction.