It's hard to say without more information about the specific 'the changeling fantasy novel'. But typically, there would be the changeling character itself. There might also be the person or family that the changeling is replacing or interacting with. And often, there are other magical beings or characters who are aware of the changeling's true nature and play a role in the story.
In a changeling fantasy novel, you'll usually find the changeling at the center of the story. This character is often in a state of confusion about their identity. Then there could be a wise old wizard or mentor type of character who helps the changeling figure things out. There may also be some antagonists, perhaps other magical creatures who want to use the changeling for their own purposes or are trying to stop the changeling from discovering their true self.
The main characters in 'the changeling fantasy novel' are likely to include the changeling, of course. It might be a young, innocent being who has been thrust into a new world. There could be a human family that the changeling becomes a part of. The parents in the family might be important characters as they deal with the strange behavior of the changeling. And there could be a magical guardian or protector figure that appears throughout the story to guide the changeling on its journey.
I'm not entirely sure as I haven't read the specific 'The Changeling Novel'. But usually in such a novel, there would be the changeling character itself, perhaps a human who has been transformed. There might also be a mentor - like figure who helps the changeling understand their new state.
I don't know for sure since I don't have the details of this particular graphic novel. But it could have the changeling itself as a main character, and perhaps a mentor figure who helps the changeling understand its powers or origin.
In many 'the changeling fanfic' stories, the main characters are likely to be changelings. They might be portrayed in different ways, like a young and naive changeling trying to find its place in the world, or an older, more experienced changeling who is trying to change the ways of their kind. Other possible main characters could be those who are affected by the changelings' actions, like a human village leader who has to deal with the presence of changelings near their village.
The main characters often include the changeling itself. It's this mysterious being that takes on the form of the person it replaces. The family that the changeling infiltrates is also very important. The parents will be the ones to first suspect that something is wrong. There could also be a local expert, like a priest or a shaman in some versions, who tries to deal with the situation of the changeling in the family.
Well, obviously the changeling queens themselves are main characters. Each queen might have her own distinct personality, like one could be very fierce and war - like, while another is more diplomatic and cunning.
The most important character is Christine Collins. She is at the center of this true story. There are also the police officers who play a negative role as they try to deceive her and cover up their actions. And of course, there is the mystery surrounding her missing son.
In 'the changeling old story', the key characters are the changeling, which is often a mysterious and magical entity. Then there are the human parents or caretakers of the child. They are the ones who notice the strange behavior of the supposed changeling and try to deal with the situation. There might also be some wise old women or men in the story, who are considered to have knowledge about how to deal with changelings, like knowing certain spells or rituals to get the real child back.
Without more information about this 'the changeling a true story', it's difficult to determine the main characters. However, in a typical changeling story, there would likely be the parents or guardians who first notice something strange about the child. There might also be some sort of authority figure or expert who gets involved in trying to figure out what's going on, whether it's a doctor, a psychologist, or a local wise person.
I'm not sure exactly as I haven't delved into it deeply, but it's likely to have a central character who is at the heart of the 'changeling' situation, perhaps a victim of some sort of misrepresentation.
I'm not sure specifically as I don't know the exact 'the changeling science fiction' work. But generally in such stories, there could be the changeling itself as a main character. There might also be a scientist or an investigator trying to figure out what the changeling is all about.