The harpy girl is fascinating. Her ability to fly and her bird - like features add an exotic touch. She has a free - spirited nature that often clashes and then reconciles with the more grounded characters in the story.
One of the popular characters is probably Tionishia. She is a very large and powerful ogre, and her unique appearance and personality can make for interesting storylines in fanfiction. Another could be Rachnera, the arachne. Her complex nature and her interactions with other characters are often explored in fanfictions.
Friendship is another important theme. The relationships that develop between the male protagonist and the various monster girls illustrate how different beings can form deep bonds, regardless of their differences.
One interesting fanfic could be about the daily lives of the monster girls outside of school. It might explore their relationships with each other in more depth. For example, how the centaur girl and the slime girl interact when they go shopping together in the human world.
Mermaids are also popular. They live in the water, which gives a whole new setting for the story. Their ability to communicate with sea creatures and their enchanting voices make them stand out. In fanfics, they might be on a journey to the surface world and encounter all sorts of adventures with humans.
Some fanfictions might focus on the relationships between the monster girls. They could show the friendship or rivalry among different types of monster girls. For instance, a story about a harpy and a mermaid becoming friends despite their different habitats and abilities. Another interesting aspect could be the love stories. A centaur falling in love with a human and how they overcome the differences between their species.
There are indeed such books. These usually build fictional worlds where monster girls exist, and the interviews are a means to understand their unique characteristics, like their abilities, their social structures if any. It's a creative concept that has been explored in the realm of fantasy literature for all - ages readership.
I'm not entirely sure as I haven't read every bit of it, but likely there are some key monster girl characters and maybe a human protagonist.
Lamia is often a popular character. Her snake - like lower body gives her a unique appearance and her personality can range from sly and cunning to kind - hearted. Another popular one is the Harpy. With her wings and bird - like features, she can bring an element of freedom and wildness to the story.
Cady is definitely one of the most interesting characters. She comes from a different background, having grown up in Africa, and then has to navigate the complex world of American high school. Her transformation from an innocent outsider to someone who gets caught up in the mean girl drama and then finds her way back to her true self is captivating.
Don't forget to add your own unique touch. You can create new characters or sub - plots that complement the main story. For instance, a secret club in the school that only some of the monster girls are part of. Also, make sure to write in a way that captures the charm and fun of the Interviews with Monster Girls universe.