Popular concepts in Finn's parents fanfiction include the thought that his father was a great hero who sacrificed himself to save Ooo from a great threat, and his mother was a healer who couldn't save him. Another is that they were both exiled from their own communities for falling in love. So they left Finn in a place they thought would be safe. There are also fanfictions where Finn's parents are actually from the future and were trying to prevent a catastrophic event in Finn's timeline by leaving him in the past.
In Adventure Time Finn Parents Fanfiction, a frequently seen concept is that Finn's mother was a princess from a forgotten kingdom. She might have fallen in love with Finn's father, a commoner. But due to political unrest or some dark magic, they had to separate and leave Finn. Also, the idea that Finn's parents were time - travelers is quite popular. They could have been sent back in time and got stuck, leaving Finn behind as they tried to fix the time - rifts they created.
Finn's parents in Adventure Time fanfiction can have really interesting backstories. Maybe his mother was part of an ancient race that was hunted, and she hid Finn to protect him from the same fate. His father might have been a member of the human tribe that was scattered across the Land of Ooo. Fanfiction allows for different interpretations of how Finn came to be alone as a baby. It can be really exciting to read different authors' ideas on this.
There is a fanfiction where Finn accidentally stumbles upon a magical harem. In this story, he has to learn to balance his normal adventuring life with the new dynamics of the harem. It shows his growth as a character as he faces different challenges and emotions related to the harem members. It's quite interesting as it also incorporates elements from the original Adventure Time world, like the use of magic and strange creatures.
One popular storyline could be Finn's hair having magical properties. For example, his hair might grow uncontrollably and start to have a life of its own, leading him on an adventure to find a way to control it. Another could be a story where Finn's hair is the key to unlocking a hidden realm. Writers might also explore a plot where Finn's hair changes color based on his emotions, which then affects his adventures in strange ways.
One popular story could be about Finn and Bubblegum going on a quest to save the Candy Kingdom from a new and mysterious threat. In this fanfiction, Finn's bravery and Bubblegum's intelligence are put to the test as they face various challenges along the way.
One great 'Adventure Time Finn' fanfiction is 'Finn's New Quest'. It takes Finn on a journey to a mysterious land beyond Ooo. Another is 'Finn and the Lost Crystal', where Finn has to find a powerful crystal to save the Candy Kingdom. There's also 'Finn's Friendship Trials' which focuses on Finn's relationships with his friends in unique and challenging situations.
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.
The 'Finn and the Vampire Clan' is quite popular. It has an engaging plot where Finn discovers a hidden vampire clan in the Land of Ooo. The story is full of twists and turns as Finn tries to understand their motives and whether they are a threat or not.
Well, obviously Finn's sister herself is a popular character in these fanfictions. Also, Jake the dog might be involved as he is Finn's best friend. Princess Bubblegum could also be popular as she is an important figure in the Adventure Time world. She might interact with Finn's sister in various ways, like teaching her some science or asking for her help in a kingdom - related matter.
The popularity lies in the fact that Finn and Marceline are both very interesting characters on their own. Finn is the adventurous hero and Marceline is the cool vampire. When you put them together in a love story, it's like mixing two very different but exciting elements. Also, the Adventure Time world is so rich and full of possibilities that writers can create all kinds of scenarios for their love to develop in.
One aspect of 'Adventure Time Finn Alone Fanfiction' could be exploring Finn's character development in isolation. Finn is usually a very social character in the main series, so seeing him alone can show a different side of his personality, like his self - reliance and how he copes with solitude.