Most likely the dragon and the rose are the main characters, even though the rose is a plant, it can be personified in the fanfic.
In 'the dragon and the rose fanfic', aside from the dragon and the rose, there could be other characters too. There might be a wizard or a fairy who has some sort of relationship with either the dragon or the rose. For example, a wizard might be trying to control the dragon's actions regarding the rose, or a fairy could be the one who planted the rose in the first place and has a connection to it.
The main characters are surely the dragon and the rose. But depending on the nature of the fanfiction, there could be side characters. For instance, if it's set in a medieval - like fantasy world, there could be knights who are either trying to slay the dragon or protect the rose for some reason. Maybe there are also talking animals that serve as messengers between the dragon and the rose.
A 'the dragon and the rose fanfic' could have a complex plot. For example, the rose could be a symbol of love in a world full of magic and danger. The dragon, which is usually seen as a powerful and fearsome creature, might find an unexpected soft spot for the rose. There could be other elements like a prophecy that links the dragon and the rose together. Maybe the dragon has to go on a quest to save the rose from withering, and along the way, it meets different creatures and overcomes various obstacles.
Well, in a 'dragon and the rose fanfic', it could be that the rose has special powers. The dragon, being a curious or inquisitive being, is drawn to the rose. The fanfic could explore how their relationship develops over time. It could start with the dragon simply noticing the rose, and then as the story progresses, they might go on adventures together, or the dragon might protect the rose from those who would use its power for evil. There could be other characters in this fictional piece as well, like fairies or wizards who also have an interest in the rose or the dragon.
Typically, Naruto is the main focus. But depending on the plot, Sasuke could also play a significant role. For example, if the rose has some connection to the Uchiha clan, Sasuke would be drawn into the story. And there could be an old sage or a fairy - like character who knows all about the rose and its powers, guiding Naruto (and sometimes Sasuke) through the events of the fanfic.
Typically, the main characters would still include Ruby, Weiss, Blake, and Yang from the RWBY series. However, in the Enchanted Rose fanfic, there might be new characters introduced who are somehow related to the enchanted rose, like a guardian of the rose or a character who is cursed because of the rose.
Another possible main character could be her rival. This rival could be from a different boxing school or have a completely different boxing style. Their interactions both in and out of the ring would be a major part of the story.
The main character, the 'rose', could be a young, idealistic person. There might be an older, more cynical character as one of the 'thorns'. There could also be a group of characters who are the 'thorns' together, like a clique that doesn't welcome the 'rose' into their midst. Without reading the actual fanfic, we can only guess based on the common interpretations of the 'rose among the thorns' concept.
I think a fanfic about Stardust Dragon and Black Rose Dragon can be really interesting. It might explore their unique powers and how they interact in a different storyline. Maybe it could show them teaming up against a common enemy or having some sort of rivalry -turned - friendship arc.
The main characters are, of course, the 11th Doctor and Rose. The 11th Doctor is known for his energetic and somewhat eccentric personality. He has his signature bow tie and fez. Rose, on the other hand, is a strong - willed and adventurous character. She has her own set of skills and experiences from her previous travels with the Doctor.