One good Marceline crossover fanfiction could be a crossover with Adventure Time and Steven Universe. In such a story, Marceline's punk - rock vampire nature could interact interestingly with Steven's positive and empathetic personality. Maybe they team up to solve a mystery that involves both their worlds.
You could also follow some fanfiction writers on platforms like Wattpad who are known for writing about Marceline crossovers. They might post new stories or recommend other great works in the genre.
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.
A Marceline and Finn kiss in fanfiction can be really interesting. It might show a different side of their relationship. Maybe in the fanfic, it's a moment of realization for both of them, a deeper connection that goes beyond their usual adventures. It could also be a turning point in the story, leading to new plot developments like them facing challenges together as a couple or dealing with how their friends react to this new relationship.
Simon, if he makes an appearance in the fanfiction, would have a very different dynamic with Marceline. He has a long history with her and his wisdom could play a crucial role in helping her understand and manage her 'vampire in heat' situation. His presence could also bring up a lot of memories for Marceline, which would add depth to the story.
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.
Yes, there are some out there. You can try searching on popular fanfiction websites. Some might focus on the idea of Finn and Marceline having a baby in an alternate universe where their relationship has developed in that direction. They could be dealing with the challenges of raising a child in a post - apocalyptic world like in the 'Adventure Time' setting.
In such fanfiction, the lemon part usually implies a more adult - themed or steamy relationship exploration. However, it's important to note that this often goes beyond the boundaries of the original children - friendly Adventure Time series. Some writers might use it as a way to add a new dimension to their relationship, perhaps showing how they overcome challenges not just as friends but as lovers in a more intense setting.
The appeal might be the forbidden - like nature of their relationship in the original show. Fans are drawn to the idea of seeing what could happen if they had a more intimate relationship. It's like exploring uncharted territory.
I really like 'Finn and Marceline's Unlikely Alliance'. It shows a unique take on their relationship where they start off as reluctant partners but end up having a strong bond. There's also 'Marceline's Song for Finn' which is a more emotional fanfiction that focuses on Marceline's feelings towards Finn through her music.