Well, in fanfics regarding Finn's arm in Adventure Time, some might focus on a magical or mythical origin for his arm. For example, it could be revealed that his arm has a connection to some ancient power or being from the Land of Ooo. It could also be used as a plot device to show Finn's growth. If his arm is injured, he might have to learn to adapt and become stronger in other ways, which would be an interesting character development arc in the fanfic.
One idea for an Adventure Time Finn arm fanfic could be that Finn discovers his arm has the ability to phase through solid objects. This new power could lead him on a quest to find out where it came from and how to control it. He might have to visit some of the more mysterious places in Ooo, like the Crystal Dimension, to get answers.
One possible aspect of Finn losing his arm in fanfiction could be how it changes his physical capabilities. He might have to adapt his fighting style, perhaps relying more on his legs or using his remaining arm in more creative ways. For example, he could learn to use his sword one - handed in a whole new way that surprises his enemies.
It could also introduce new characters. Maybe there's a healer or a wizard in the Land of Ooo who claims to be able to restore his arm. Finn would then go on a quest to find this character, meeting all sorts of strange and wonderful creatures along the way. And each encounter would be different because of his disability.
A writer can describe Finn's physical reactions. For example, they can write about his eyes welling up with tears that start to roll down his cheeks. Mentioning how his voice might crack when he tries to speak can also be effective. Another way is to show his body language, like his shoulders slumping as he cries.
One common theme is friendship. Finn is all about his friends in the show, and in fanfics, his relationships with Jake, Princess Bubblegum, and others are often explored further. Another theme is self - discovery. Finn is constantly growing and learning about himself, and fanfics often take this aspect and expand on it. For example, in some fanfics, he discovers new powers or abilities that make him question who he really is.
By using body language descriptions. For example, the author can write about Finn blushing furiously, looking down at his feet, and fidgeting with his hands. This shows his unease and embarrassment clearly.
Princess Bubblegum could be one. She's smart, powerful, and has a long - standing relationship with Finn. Another could be Flame Princess. Their relationship has always been complex and full of chemistry. And maybe Marceline could also be part of it. She and Finn have a great friendship that could potentially develop into more in the context of a harem fanfic.
One great 'Adventure Time Finn Hair' fanfic is 'Finn's Hair: A Mysterious Power'. It delves into the idea that Finn's hair has some hidden magical abilities that he's not yet fully aware of. The story has some really cool action scenes where Finn has to use his hair in creative ways to defeat enemies. It also has some nice character development for Finn as he discovers more about this unique aspect of himself.
One common theme could be friendship. Finn's relationships with other characters in Adventure Time might be explored in relation to this 'butt' aspect in a humorous or unique way. Another theme could be adventure itself. How Finn's adventures are affected or related to this particular idea.
The unique element is often the exploration of Finn's different personality in his ice form. He can be more cold - hearted in a literal sense, which creates interesting conflicts.