Foxy in these fanfictions is frequently portrayed with a sense of loyalty. He might be the type to stay by the Reader's side through various dangerous situations in the FNAF world. His broken - down appearance in some versions of the game also adds to the pathos in the fanfictions. Writers often play on his 'outcast' status among the other animatronics, which can make for some interesting relationship dynamics with the Reader.
One possible scenario could be that in the fanfic, Foxy runs away because he's scared of something in the pizzeria. Maybe he's afraid of the new security measures that are being put in place which he doesn't understand. As for the Foxy x Reader part, perhaps the reader is the only one who can understand Foxy's distress and tries to find him.
Obviously, Foxy and the reader are the main characters. Foxy is the animatronic character with its own personality and backstory within the FNAF universe. And the reader is the character through whose perspective the story is often told.
In a 'FNAF Foxy Runaway Foxy x Reader Fanfic', the plot might involve the reader being in the wrong place at the right time. Foxy is on the run from the other animatronics or some other threat in the pizzeria. The reader and Foxy start to trust each other as they face various obstacles together. For example, they might have to avoid security guards or other animatronics that are out to get Foxy. As they spend more time together, a special relationship develops between them, which could be a friendship or something more romantic depending on how the author wants to write it.
To write an interesting plot, think about the backstory of Foxy. Maybe the reader stumbles upon a secret about Foxy's creation that changes their relationship. You can also include other animatronics in the story to create more conflict. For instance, if the other animatronics are jealous of Foxy's connection with the reader. Also, don't forget to build up the tension. The reader could be constantly in danger, and Foxy is their only hope. This keeps the reader on the edge of their seat.
One great Foxy x Reader fanfiction could be about the reader getting lost in the spooky FNAF world and Foxy being the one to help them. It might involve Foxy protecting the reader from the other animatronics. Another could be a story where the reader is a new employee at the pizzeria and forms a special bond with Foxy over time.
The plot could involve Foxy running away because he feels a connection to the reader that he can't explain. He's afraid of how the other animatronics will react, so he runs. The reader, on the other hand, is determined to find Foxy. As they search, they face various challenges in the spooky pizzeria. It could also be that Foxy is trying to protect the reader from something in the pizzeria by running away, leading the reader to figure out what that is.
One common theme is adventure. Foxy is often depicted as taking the reader on some sort of exciting adventure in the FNAF world, whether it's exploring the haunted pizzeria or trying to escape from other animatronics.
You can try looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. There are usually a lot of FNAF Foxy x Reader fanfictions on these platforms. Just use the search function and type in 'FNAF Foxy x Reader' to find relevant stories.
A simple fanfiction could be that Foxy and Mangle meet for the first time. Foxy is curious about the strange new animatronic that is Mangle. They exchange glances and start to communicate in their own animatronic ways, perhaps through beeps and flashes. This could be the start of an interesting bond.