There could also be fanfictions that focus on her backstory. How she came to be, her experiences in the pizzeria before the events of the main FNAF story. Writers might give her a more detailed and emotional past to make the character more relatable.
I'm not aware of any specifically popular 'baby mangle fanfic' stories. It might be a relatively niche area within a particular fandom, and popularity can be subjective. There could be some hidden gems out there that are well - liked by a small group of dedicated fans, but it's not something that has reached a wide - spread mainstream popularity.
Well, often there's a theme of mystery. Since it's a mangle and a human, there could be elements of the mangle having some sort of hidden powers or secrets that the human is trying to figure out. Also, the theme of friendship can be quite prevalent. They might start out as strangers but gradually form a strong bond. And sometimes, there's a theme of protection, where either the mangle protects the human or the other way around from various threats in their fictional world.
The mystery surrounding these characters in the original Five Nights at Freddy's game makes for great fanfiction. People are intrigued by their backstories and what could have happened to them. Writers can explore different scenarios, like how they came to be the way they are in the game.
There might be some 'foxy x mangle human fanfic' stories that are popular within certain fan communities. However, in the broader scope of fanfiction, they may not be as well - known. The popularity of such stories often hinges on the size and activity of the fan community dedicated to these characters. Also, the quality of the writing, the uniqueness of the plot, and how well it adheres to the source material's essence can all contribute to whether a particular fanfic in this category becomes popular.
In fanfiction, Springtrap and Mangle often appear in some really interesting scenarios. Some fanfictions might focus on their spooky interactions within the dark and eerie setting of the FNAF world. They could be depicted as having a sort of rivalry, given their different natures in the original game lore.
One good one might be 'The Encounter of Foxy and Mangle' where their kiss is a significant moment in the story. It builds on their unique relationship within the animatronic world.
Another option is FanFiction.net. There are many writers who post their works there. Just be sure to read the tags and descriptions carefully to find the ones that suit your taste.
One interesting story could be about Mangle and Toy Freddy teaming up to solve a mystery in the pizzeria. They might discover a hidden room or a strange malfunction in the other animatronics.
Some 'Foxy meets Mangle' fanfictions may focus on a more comical aspect. For example, Foxy, who is known for his somewhat serious pirate persona, could be constantly confused by Mangle's energetic and somewhat chaotic nature. This creates a series of humorous situations where they interact, like when Mangle tries to get Foxy to play games with the other animatronics, but Foxy is reluctant at first because it doesn't fit his tough - guy image.
There could be some fanfiction out there with such a concept, but it's not a common or mainstream idea within the FNAF fanfiction community. Most fanfictions tend to focus on more typical themes like the horror aspects, the backstories of the animatronics, or the relationships between the characters in a less extreme way. So, it's likely that it's not easy to come across this particular type of fanfiction.