Another interesting fanfic idea is that Marceline loses her vampiric powers and Marshall Lee has to help her adapt to a more 'human' or at least non - vampiric life. This would lead to a lot of character development as Marceline struggles with her new identity and Marshall Lee learns more about her true self beyond her powers.
One great example could be those fanfictions where Marceline and Marshall Lee go on a musical adventure together. Since they both have a love for music in the show, it makes for an interesting plot. Another could be a story where they team up to save the Candy Kingdom from a new, unseen threat. In these fanfictions, their unique personalities and powers are often explored in depth.
A great plot could be a love triangle in fanfiction. Marceline and Marshall Lee both fall for the same person from another dimension. This creates tension between them as they have to decide whether their friendship is more important or their new found love. It also shows a different side of their characters as they struggle with jealousy and self - discovery.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of Adventure Time fanfics, and you can easily search for Marceline and Marshall Lee specific ones using the search function.
In fanfics, Marshall Lee's relationship with Marceline can range from being best friends to having a more complex, unspoken attraction. He might be the type to play pranks or be nonchalant about things, while Marceline is more likely to take charge when they're in a tough situation. Their interactions are often filled with banter and a deep understanding of each other that comes from their long - standing relationship.
The popularity of Marceline x Marshall Lee fanfiction comes from their interesting dynamic. They are both cool, edgy characters with a lot of mystery. Fans like to explore their relationship further, whether it's platonic or romantic.
One interesting story could be about their adventures in a new magical realm. They might face a powerful enemy together and in the process, their relationship deepens. Maybe they discover a long - lost song that has special powers and they have to work together to unlock its secrets.
One common theme is the exploration of their past. Since they both have long and somewhat mysterious histories, fanfics often dig into how their past experiences have shaped their relationship in the present. For example, their experiences with being vampires or half - vampires can play a big role in how they interact with each other.
One idea could be Marceline reminiscing about her first encounter with Finn and Jake. It could show how she initially perceived them as just two silly adventurers but later grew to respect and care for them. Another could be her memories of her mother, exploring the complex emotions she has towards her. Maybe she remembers a time when her mother taught her a particular song or magic trick.
Friendship is a common theme. Since they are from different worlds (Marshall Lee from Adventure Time and Gumball from his own show), exploring how they become friends is often in the fanfics. Another theme is adventure. They usually go on some sort of journey together.
One common theme is friendship. Their relationship, whether it's a budding friendship or something more, is often explored. For example, how they support each other in difficult situations.