Since we don't have the full story, it's hard to say for sure. But we can assume that the girl who turns into a mouse is a main character. There might also be other characters like the one who caused the transformation or those she meets in her mouse form.
The main character is likely the girl who undergoes the transformation to a mouse. However, there could be other important characters. Maybe there's a wizard or a magical creature that is either responsible for the transformation or has the power to reverse it. Also, there could be other animals in the story that she befriends or has conflicts with while she is a mouse, and they could be considered main characters in the sense that they play a significant role in her journey as a mouse.
In the 'girl to mouse tf story', the obvious main character is the girl who becomes a mouse. But there may be other characters that are crucial to the plot. For instance, if it's a magical story, there could be a wise old owl who serves as a guide to the girl - mouse. Or perhaps there's a mean cat that constantly chases her, creating a sense of danger. There could also be a human character, like a friend of the girl who is searching for her and trying to figure out what happened. All these characters could contribute to the development of the story and be considered main characters in different ways.
Well, in this story, the main character is the mouse girl, of course. But there could be other important characters too. Maybe there is a human child who discovers the mouse girl. At first, the mouse girl is scared of the human, but then they become friends. This human could introduce the mouse girl to a whole new world of things she has never seen before, like toys and books. There could also be a group of other small animals like squirrels and chipmunks that the mouse girl interacts with. They might be her neighbors and they all live in a big forest together.
I'm not sure specifically what this 'girl to mouse tf story' is about without more context. It could potentially be a transformation story where a girl turns into a mouse, perhaps in a fantasy or magical setting.
I'm afraid I don't have enough information to name the main characters precisely. However, if it's a story about a girl turning into a jackal - like being, there could be characters who help her through the transformation process. Maybe there's a wise old mentor figure, or perhaps there are other characters who are also going through similar transformations. And of course, there could be antagonists who oppose the jackal girl for some reason, like a group that fears or hates her new form.
Since I don't know the exact 'Spider Girl TF Story', I can't say for sure. But most likely, Spider Girl herself would be a main character.
Given the title 'shark girl tf story', the obvious main character is the shark girl. But there could be other supporting characters. For example, if the story is set in a coastal town, there might be fishermen who have seen strange things related to the girl. Or if it's a story about her fitting into a new world, there could be other 'creatures' or people in that world who interact with her. There could also be a mentor - like figure who helps her understand and control her new form or abilities if it involves a transformation.
The girl is the central character. There might also be a mentor figure, perhaps an old monkey who has some knowledge about the transformation and can guide the girl (now a monkey) on her journey. And of course, there could be antagonists like other animals that don't want the girl to return to her human form or the one who caused the transformation in the first place.
There could be other characters in the 'nerd girl tf story' as well. It might have a friend or a mentor figure who helps the nerd girl in her transformation. For example, a fellow nerd who encourages her to step out of her comfort zone, or a teacher who sees her potential and guides her in a new direction. There could also be antagonists, like classmates who bully her for being a nerd, which could be part of the story's conflict and her journey of transformation.
Since I don't know the exact 'fox girl tf story', it's hard to say. But it might have the fox girl herself as a main character, and perhaps someone who witnesses or helps with her transformation.
Since I don't know the exact 'good girl tf story', it's difficult to say. But if it's a typical story, the main character would likely be the 'good girl' herself. There might also be other supporting characters such as her friends, family members, or a mentor figure who helps her in her journey.
The main character is probably the girl who is at the center of this transformation. There might also be other characters like her friends or family who react to her change. Maybe there are antagonists who cause the transformation or try to take advantage of her new state in the story.