What are some common themes in Finn and Marceline fanfiction aside from romance?

One common theme is friendship. Finn and Marceline have a unique friendship that often gets explored in fanfiction. They come from different backgrounds, Finn being a human hero and Marceline a vampire, and how they bridge those differences in their friendship is a popular theme. Another is adventure. Since they live in the Land of Ooo, they often go on wild adventures together in these stories.

Well, a frequent theme is the contrast between their personalities. Finn's optimism and Marceline's more cynical nature create an interesting dynamic. Also, the theme of mystery is common. Marceline has a lot of secrets, and fanfics often revolve around Finn trying to uncover them. And of course, the theme of acceptance. How they accept each other's flaws and differences is a big part of many Finn Marceline fanfics.

In one fanfiction, Finn and Marceline start off as friends who slowly realize their feelings are deeper. Finn, always the brave adventurer, begins to notice how much he misses Marceline when she's not around. Marceline, for her part, sees Finn's kindness and courage in a new light. One day, during a dangerous adventure where they protect the Candy Kingdom together, they share a moment of closeness that makes their relationship shift towards love.

Adventure is a major theme too. Since they are in the world of Adventure Time, they go on quests and have escapades. This theme allows for a lot of action and exploration in the fanfics. And there's also the theme of trust. As their relationship develops, they learn to trust each other more and more, which is a key part of their story.

A possible theme could be family. Finn and Marceline creating a family unit and learning what it means to be parents in their unique world.

One popular Finn and Marceline fanfiction is 'The Adventure Beyond Time'. It takes the two characters on a journey through different time periods in the Land of Ooo. Another is 'Finn and Marceline's Musical Bond' which focuses on their shared love for music and how it deepens their friendship. And 'The Mysterious Encounter' where they team up to solve a strange mystery in the forest.

In fanfiction, their relationship could be developed by having them team up for a noble cause, like saving the Candy Kingdom from a new threat. During this mission, they face challenges that require trust and cooperation. Finn might learn to be more patient with Marceline's mood swings, and Marceline could come to appreciate Finn's unwavering optimism. Also, they could have a friendly competition that turns into a deeper understanding of each other's strengths and weaknesses.

Often, in Marceline loves Finn fanfiction, there's a strong sense of the contrast between their personalities. Finn is usually very optimistic and straightforward, while Marceline is more complex and a bit brooding. This contrast creates interesting dynamics in the stories.

A different creative plot could be that they initially keep the pregnancy a secret. As Marceline starts showing, they have to come up with excuses for her changing appearance. Meanwhile, Finn is secretly preparing a surprise for her and the baby, like building a magical treehouse that will be their new home. They also struggle with the idea of how to protect their child from the potential dangers in their world.

The theme of sacrifice is also quite prevalent. Finn may have to sacrifice something, like his own desires or his time with friends, for the sake of his romantic relationship. In many fanfictions, he has to make tough choices between his love and other aspects of his life in Ooo.