Obviously, Marinette and Adrien would be key characters. Marinette could be the host of the sleepover, and Adrien might show up unexpectedly, either as himself or as Chat Noir. Their interactions would be the focus, whether it's some cute and awkward moments between them.
Ladybug and Cat Noir are definitely the most popular. They are the main heroes in the Miraculous Ladybug universe, so it's natural that they are often the focus in fanfiction. Writers love to explore their relationship, powers, and backstories.
In Miraculous Ladybug Princess Fanfiction, Marinette is a central and amazing character. She combines her Ladybug powers with her princess status in creative ways. Tikki also plays an important role. As Marinette's Kwami, she gives advice not only about being Ladybug but also about handling the responsibilities of a princess. Another character could be Chloe. In some fanfictions, she might be a rival princess or a character who has to learn to accept Marinette's new status, which creates interesting storylines.
Marinette and Adrien are definitely the most popular. Their relationship, whether as civilians or superheroes, is at the heart of a lot of fluff fanfictions. Tikki and Plagg also often feature as they add a touch of humor and cuteness with their kwami antics.
Some fanfictions also make the villains really stand out. For instance, a new villain who has a special connection to the Bee Miraculous. This villain might be trying to steal the Miraculous for a unique reason, like using its power to open a portal to another dimension. Their complex motives and devious plans can add depth to the story.
Marinette and Adrien are still very popular in Miraculous Lemon Fanfic. Their relationship is a central focus in the original show, and in the fanfics, it often gets explored in more depth, whether it's in a romantic or a platonic way.
Once upon a time, in the deep blue sea, there was a miraculous mermaid named Marina. She had a special power - the ability to heal any wound with a touch of her pearl - like scales. One day, a human sailor named Leo fell overboard during a storm. Marina found him and used her power to save his life. Leo was amazed by her beauty and kindness. He visited the sea often after that, and they became friends. Their friendship grew into love, but they knew there were many obstacles. Marina couldn't stay on land for long, and Leo couldn't live in the sea. However, with the power of their miraculous bond, they found a way to be together. They discovered an ancient magic that allowed Marina to transform into a human for short periods, and Leo learned to swim and hold his breath for longer. Their love story became a legend in both the human and mermaid worlds.
Maybe a new character from another country comes to Paris. This character has a Miraculous that has powers related to nature. Their role would be to bring a new element to the team. They could use their powers to heal the damaged parts of Paris that were affected by Hawkmoth's attacks, and also help in battles by using nature - based defenses like thick vines to trap villains.
Rena Rouge could be a great addition. She and Multimouse could team up for a stealth mission. Since both have skills related to being sneaky and quick - thinking, they could make a formidable duo. They could also have some friendly rivalry which would add an interesting dynamic to the story.
The most important characters are Ladybug and Cat Noir. Marinette, in her normal life, is a key character as she has her own relationships and daily life which are affected by the Christmas events. Adrien, too, is crucial. His relationship with Marinette, both as himself and as Cat Noir, is part of the story. Then there are the side characters like Chloe who might cause some trouble or add some drama during Christmas. And the kwamis, they are the ones that make Ladybug and Cat Noir super, so they are essential in the story.