A really cool fanfiction could be set in an alternate universe where Finn was born a vampire. He has to grow up in a world that fears him, but he still has the heart of a hero. He might use his vampire abilities for good, like super speed and strength, to protect those who are weaker, and in the process, he tries to change the perception of vampires in Ooo.
One possible scenario in this fanfiction could be that Finn's transformation into a vampire brings out a whole new side of his personality. He might struggle with his newfound thirst for blood while still trying to uphold his heroic values. Maybe he teams up with Marceline, who is already a vampire, and she teaches him how to control his urges.
There's a fanfiction that focuses on Finn's journey to save a vampire - infested kingdom. In this story, Finn teams up with some unlikely allies, including a vampire who has a change of heart. It shows Finn's determination and his ability to see the good in everyone, even vampires. The fanfiction is really detailed in terms of world - building, creating a whole new vampire - related ecosystem within the Adventure Time universe.
One interesting fanfiction could be about Finn and Bear going on a quest to find a magical artifact that can heal all wounds in the Land of Ooo. They might face various challenges like strange creatures and tricky puzzles along the way.
A great 'Adventure Time Finn Lemon Fanfiction' could revolve around Finn's quest to find a rare lemon that can cure a disease that has struck one of his friends. He embarks on a journey through different parts of Ooo, facing various challenges and meeting unique characters along the way. This story could show Finn's determination and loyalty to his friends.
One interesting Ice Finn fanfiction could be about his adventures in a frozen realm that wasn't shown in the original series. Maybe he discovers a new type of ice creature and has to form an alliance with it to save the day.
One interesting fanfiction could be about Finn and Jake going on a quest to a mysterious new land that wasn't explored in the show. Maybe they encounter a new type of magical creature that challenges their friendship and they have to work together to overcome it.
One interesting fanfiction could be about Finn and FP going on a quest to find a magical artifact that can grant wishes. In this story, they face various challenges and their friendship is tested along the way.
One interesting fanfiction could be about Finn and Marceline going on a quest to find a lost magical artifact. In this story, they might face various challenges together, like dealing with strange creatures and solving puzzles. Their different personalities, Finn's optimism and Marceline's cool - headedness, would make for an engaging dynamic.
One interesting theme is Finn's search for identity. Since he's a human in a strange land full of magical beings, he often questions who he is and where he belongs. Another theme could be his relationships, like his brotherly bond with Jake or his complex feelings towards Princess Bubblegum.
One possible scenario could be that Finn, after being turned into a vampire, struggles with his new identity. He might have to deal with the urge to drink blood while still holding onto his old values. For example, he could try to find alternative ways to satisfy his thirst that don't involve harming humans, like drinking animal blood.