A common theme is the exploration of their different natures. The withered Bonnie having a more worn - out and perhaps darker past, while the toy Bonnie is newer and more innocent. Some stories also revolve around their cooperation to face threats in the FNAF world.
Yes, there are some. You can try searching on fanfiction websites. Some might focus on their unique relationship in the FNAF universe, like how they interact in the spooky animatronic world.
Often, there is a theme of secrecy and forbidden love. Since they are both characters in a somewhat dark and spooky game setting, their relationship might be seen as something that has to be hidden from others. This adds an element of tension and drama to the fanfiction, as they have to navigate their feelings while also dealing with the external threats and mysteries of the FNAF world.
Friendship is a common theme. Writers often show how Bonnie and Toy Bonnie become friends despite their differences. Maybe Bonnie is the more traditional character and Toy Bonnie is the new addition, and they learn to get along.
Friendship is a common theme. They often start as strangers or even foes and then develop a friendship. Another theme is adventure, as they explore the pizzeria together.
Another plot might be a mystery - solving one. There could be something strange going on in the pizzeria, like missing parts or strange noises. Withered Bonnie and Toy Chica team up to figure out what's behind it all. Maybe they discover a long - forgotten secret about the place that changes everything for them.
Friendship is a common theme. They might be depicted as really good friends who support each other through various challenges in their world. Another theme could be adventure, where they go on exciting quests together.
A lot of fanfictions also focus on the idea of redemption or understanding between the two. Maybe Mangle has some issues due to its broken state, and Toy Bonnie tries to help or understand it better, and that becomes the central theme of the story.
A common theme is the clash of their natures. Springtrap being a more menacing and haunted entity compared to the more 'playful' Toy Bonnie on the surface.
Another common theme is adventure. They might go on quests or face challenges together, like exploring new areas of the pizzeria or dealing with malfunctioning animatronics. It makes for an exciting read as they rely on their bond to get through tough situations.
Another theme could be friendship. Despite their differences, they could form an unlikely friendship. They might start off as rivals, competing for the attention of the kids or the top spot in the pizzeria. But as they get to know each other better, they realize they have more in common than they thought and become friends.