There could be a sidekick character who is always there to support the main character in their adventures. This sidekick might have a great sense of humor and be able to lighten the mood during the scary times. And perhaps there's a monster that has some human - like qualities, which makes it a very complex and interesting character in the 'love and monsters story'.
Carlisle from 'Twilight' is an interesting character to include. His self - control and moral compass as a vampire could be explored further in a 'Love Story' - Twilight fanfiction. In 'Love Story', the father figure could also be an important addition as he represents a more traditional view of love and relationships. And Rosalie from 'Twilight', with her complex backstory and her own take on love and beauty, can add depth to a story that combines the two universes.
I'm not entirely sure as I haven't read it thoroughly, but usually in such a novel, there is a protagonist who is likely to be a young person. Maybe someone named Jack or something.
Sulley and Mike are definitely the most popular. Sulley is the big, furry blue monster who is the star scarer, and his relationship with Mike is really fun to explore in fanfiction. Boo is also very popular as she is the cute human girl who befriends the monsters.
Some of the rare and powerful monsters can also be considered popular characters. Like the mythical dragon - type monster, which has the ability to control elements. Fans love to write about it, either as a fearsome adversary or a loyal companion.
I'm not entirely sure without reading it, but likely there is a protagonist who is involved in the story of love and dealing with the monsters. Maybe there's a love interest as well. There could also be some side characters who help or hinder the main character's journey.
I think Trevor is one of the most interesting characters. He's completely unhinged and unpredictable. His actions are often extreme and he has a unique sense of humor. Another interesting one is Michael. His struggle between his criminal past and his attempt to have a normal family life makes him complex.
The Witch is quite interesting. She is complex, not just a simple villain. Her actions are driven by her own backstory, like how she was cursed and her relationship with Rapunzel. Another interesting character is the Baker. He has a clear goal, to break the curse on his family, and his journey through the woods is full of growth and self - realization.
Rito is quite interesting. His clumsy and often flustered nature when it comes to dealing with girls makes him a relatable character. Lala is also very engaging. Her carefree and energetic personality, along with her strange inventions, add a lot of fun to the story. Haruna is another one. Her more down - to - earth personality contrasts with the other more outlandish characters, and her relationship with Rito has its own charm.
The monster with the ability to change its color like a chameleon is really interesting. It can blend into any environment, which is a great survival skill.
A less common but interesting monster origin is that of the chupacabra. Originating from Latin American folklore, it is said to be a creature that attacks livestock and sucks their blood. Some believe it could be a result of genetic mutations or a previously unknown species. There are many eyewitness accounts, but no conclusive evidence yet.