One interesting fanfiction could be where Finn's death is a self - sacrifice to save Ooo. In this story, he might face an unbeatable enemy and choose to give his life to protect his friends and the land he loves. Another could be a more emotional take where Finn dies of an incurable disease, and his friends have to come to terms with his loss and remember all the good times they had with him.
There could be a fanfic where Finn's death is a sacrifice to save Ooo from a great evil. In this story, his death might not be in vain as it inspires others to be braver. Maybe Marceline, who has seen a lot of loss in her long life, becomes a mentor to the younger characters as they cope with Finn's death, teaching them about the importance of memory and how to keep Finn's spirit alive.
It can be quite divisive. Some fans who are very attached to Finn may be really sad or even angry about the idea of him dying in fanfics. They might see it as a negative take on the character they love. However, others may appreciate the exploration of deeper emotions and different storylines that such a concept brings. It allows for more complex character development for the remaining characters as they deal with grief.
Perhaps Finn's death is an accident. He could be exploring an uncharted area of Ooo and stumble upon a dangerous trap or ancient magic that he doesn't understand. His death shocks everyone in Ooo, and his friends start to question the safety of their continued adventures. This could lead to a whole new set of adventures for his friends as they try to come to terms with his death and make Ooo a safer place in his memory.
Well, perhaps in the fanfic, Jake's death could lead to a change in the balance of power in Ooo. Evil forces that were previously held at bay by Jake's strength start to emerge. Maybe the Ice King, instead of seeing Jake as an obstacle to his schemes regarding Princess Bubblegum, now has free rein. Finn would have to step up in a big way, but without his best friend, it would be extremely difficult. He may struggle with feelings of guilt, thinking he could have saved Jake.
It can also make readers feel reflective. His death in a fanfiction can make people think about the character's journey throughout Adventure Time. They might start to think about all the things Finn has accomplished, the relationships he's built, and how his death impacts the world of Ooo and his friends.
Finn might initially go into denial. He could keep expecting Jake to just pop back up like he always does. Then he'd probably get angry, at himself or at whatever caused Jake's death. Eventually, he'd start to accept it and try to honor Jake's memory by being a better hero.
Jake would be devastated. He and Finn are best friends. Jake might become withdrawn and less likely to go on adventures. He could also become overprotective of Finn's memory. Princess Bubblegum would likely be deeply affected too. She might feel guilty if she couldn't use her scientific knowledge to save Finn. She could also be motivated to find a way to bring him back. Marceline would probably be very sad and angry. Her relationship with Finn was special, and his death could make her more cynical about the world.
Another theme is the discovery of new powers or abilities. Writers often like to expand on the vampire's capabilities in their fanfictions, which can lead to exciting and unexpected story developments. For example, the vampire might discover a power that helps him defeat a long - time enemy or solve a mystery that has been plaguing the world in the story.
The Adventure Time graphic novels often have really vivid and colorful art. For example, the characters are drawn in a way that makes them look just like they do in the show. The storylines are also full of creativity. They can take the characters on wild adventures that you might not see in the regular TV episodes.