Another common theme is the power struggle. Since they are both related to the Miraculous world, there can be a struggle for power, either between them or against external forces. This can lead to some really intense and exciting storylines where they have to decide whether to compete or work together.
One popular theme is family secrets. Given their family background in the Miraculous Ladybug world, fanfictions often explore the secrets that Felix and Adrian might be hiding from each other or from the rest of the world. For example, there could be secrets related to their parents' past or the true nature of their family business.
I really like 'Felix's Redemption'. In this fanfic, Felix starts off as a rather antagonistic character, but as the story progresses, his relationship with Adrian evolves. It's interesting to see how they come to understand each other better, especially in the context of the Miraculous Ladybug universe with all its magic and mystery.
One great Felix fanfiction is 'Felix's New Role'. It shows Felix in a new light, interacting with the other characters in a very interesting way. The author does a wonderful job of developing his character further than what we see in the show.
One of the most popular themes is the relationship between Ladybug and Chat Noir. Many fanfictions explore their love story, from the early days of their partnership to more developed romantic relationships.
A popular theme is the werecat's role in battles. How does the werecat's unique abilities contribute to fighting against the villains in the Miraculous Ladybug world? Some fanfictions focus on the werecat being a secret weapon or an unexpected ally. Also, the theme of acceptance within the group of heroes is explored. How do the other characters accept or reject the werecat among them? It can lead to some really interesting character dynamics and plot developments.
An interesting plot. It could be something like Felix getting involved in a new adventure related to the Miraculous. Maybe he discovers a new power or has to team up with an unexpected character. A plot that keeps the reader guessing and interested is key. For instance, a story where Felix has to solve a mystery that involves the origin of the Miraculous would be really engaging.
Love triangles are also common. Usually involving Ladybug, Chat Noir, and another character. It adds a lot of drama and tension to the story. For example, some fanfics have a new superhero who falls in love with Ladybug, causing Chat Noir to be jealous.
A common theme is the team - up. Writers love to create scenarios where Danny and the Miraculous heroes join forces to fight a common enemy. It could be a powerful ghost - like villain that neither group could handle alone. There's also the friendship theme, showing how the characters from different universes become friends and learn from each other.
Another theme is Nathanael's self - discovery. In the Miraculous Ladybug series, he has a lot of room for growth. Fanfictions take advantage of this and show him learning more about himself, his strengths, and his weaknesses. He might overcome his shyness, for instance, or discover a hidden talent that helps him in his adventures. This theme makes the fanfictions not only entertaining but also inspiring.
Friendship is also a big theme. Ladybug and Cat Noir's friendship is put to the test when dealing with the Timetagger. They have to trust each other more than ever, especially when they are separated in different time zones or when one of them is affected by the Timetagger's time - warping powers.
One popular theme is 'alternate realities'. Since Wishmaker has the power to grant wishes that can change the world, fanfiction often explores different versions of the Miraculous Ladybug universe. Writers might create a world where Ladybug's identity is public, or Chat Noir has a different power set. It's a great way to play with the existing lore and characters.