Perhaps a story where Jake gains weight due to overeating at a magical food festival. His new size might cause problems when it comes to using his stretching powers, and the story could be about how he and his friends work together to get him back to his normal state.
There could be a fanfiction where Princess Bubblegum conducts an experiment that goes wrong and results in her own weight gain. In this story, she might have to figure out how to reverse the process while still ruling the Candy Kingdom. It could explore themes of self - acceptance and problem - solving.
There could be a fanfic where Princess Bubblegum is conducting an experiment that goes wrong and results in her gaining weight. This could lead to a story about self - acceptance and how her kingdom still loves and respects her regardless. Maybe Marceline helps her through the process with her cool and carefree attitude.
In some girl weight gain fanfiction, the story might start with a girl being bullied for her appearance. But as she gains weight, she finds a group of friends who support her and help her see that her value is not in her body size. The story could also show how she starts to dress in a way that flatters her new body and becomes more confident, regardless of the numbers on the scale.
One popular one might be those where a character goes through a magical transformation that causes rapid weight gain as part of the plot. Another could be related to a character's overindulgence in a fictional world filled with delicious but fattening foods.
There could be a 'tails weight gain fanfiction' where Tails is on a mission with his friends and they end up in a land with different gravitational rules. This causes his body to adapt in a way that leads to weight gain. He then has to figure out how to get back to normal while still helping his friends with their mission.
One popular story might be about a character in the 'Hunger Games' universe who, due to a change in their living situation post - Games, starts to gain weight in an unexpected way. For example, if a victor is finally in a place of safety and abundance, they might overindulge in the newfound food resources.
One popular one could be about a male character from a well - known superhero cartoon. In the fanfiction, he might gain weight due to a magic spell gone wrong. This change in his physique then leads to various adventures and self - discovery as he tries to reverse the spell while also dealing with how his friends and foes react to his new look.
An interesting Adventure Time weight gain story could involve Lumpy Space Princess. She might visit a new dimension where everything is made of rich, creamy substances. She eats and eats, and her lumpy space body starts to expand. At first, she's horrified, but then she finds that her new, bigger lumps give her the ability to bounce higher and farther. This allows her to travel across different parts of Ooo much faster than before, and she starts to see her weight gain as a kind of superpower.
Once upon a time in Adventure Time, Finn and Jake were on a mission to help Princess Bubblegum. She had been working on a new experiment that involved a lot of delicious magical candies. Princess Bubblegum couldn't resist tasting them as she worked. As days passed, she started to gain weight. But instead of being sad, she found that her new rounder shape made her even more in touch with the magical essence of the candies. She then used this newfound connection to create a spell that saved the Candy Kingdom from a great danger.
One popular example could be those that explore how Batman's change in weight might affect his combat abilities. Maybe he has to adapt new fighting styles. Another example could be stories where his weight gain is part of a villain's plot, like Poison Ivy using some sort of chemical to make him gain weight so he can't move as swiftly. And there are also fanfictions that deal with the emotional aspect of Batman seeing himself gain weight and how he copes with his changed self - image.
I'm not entirely sure which specific 'Cynder weight gain fanfic' stories are popular. However, you can try looking on fanfiction platforms like FanFiction.net or Archive of Our Own. They usually have a wide variety of fan - created works, and you might be able to find some interesting ones related to Cynder's weight gain by using relevant search terms.