There might be the mermaid herself, who would be a central character as her heart is the focus. There could also be a hero or anti - hero type of character who is set on taking the heart. And perhaps there are other sea - creatures or humans who are either helping or hindering the process of taking the mermaid's heart, like a wise old sea turtle or a cunning pirate.
I don't know since I haven't read the novel.
The main plot might revolve around the significance of the mermaid's heart. It could be that in the world of the novel, the mermaid's heart holds great power, like the ability to control the seas or grant immortality. And different characters with different motives are trying to take it, leading to a complex web of relationships, conflicts, and adventures.
I don't know for sure. It could be the mermaid herself as the main character. There might also be a human who discovers the mermaid's secret.
In many mermaid graphic novels, there are often sea creatures as main characters too. For example, a dolphin that is the mermaid's best friend and helps her in her adventures. A sea witch can also be a main character if the story involves some kind of conflict or magic. And sometimes, there's a human prince who falls in love with the mermaid, which drives a large part of the plot.
The primary character is the little mermaid herself. She is the one whose story we follow throughout the novel. The prince is another key figure. His actions and lack of awareness of the mermaid's true identity are significant plot elements. Then there is the sea witch. She provides the mermaid with the means to pursue her love for the prince but at a great cost. There are also the mermaid's sisters who try to help her in their own ways.
The little mermaid is the main character, of course. She is the one who drives the story forward with her desires and actions.
It also might be characters that are in some way affected by a supernatural or otherworldly element. In Shelley's works, such elements often interact with the characters' innermost feelings and desires (represented by the 'heart'). So, a character who encounters a strange phenomenon and has to grapple with how it changes their understanding of themselves and their heart's longings could be a main character.
There could be a mentor figure. In many stories about warriors, there is someone who guides the main warrior, teaching them skills, wisdom, and values. In 'a warrior's heart novel', this mentor might play a crucial role in the main character's development.
I'm not sure as I haven't read the novel specifically. But it could be the soldier himself, his comrades, and maybe his family members.
As I haven't read 'clara's heart novel', it's hard to tell. But if Clara is the central figure, there could be other characters who are important in her life, like her family members, friends, or a love interest. They would probably play significant roles in the development of the story.
I don't know as I haven't read it. So I can't name the main characters.