The plot might involve the other animatronics trying to figure out what's wrong with Foxy. They could be confused because they've never seen an animatronic get 'sick' before. Some might be worried about him, while others might be a bit more indifferent. The story could also show how the staff at the place deals with a'sick' animatronic. Do they try to fix him right away? Or do they just leave him be for a while?
Perhaps the fanfiction could explore Foxy's own perspective of being sick. He might be in pain or just feel really off. He could be scared that he'll be decommissioned if he can't get better. It could also show his relationship with the kids in the pizzeria. Do they notice that Foxy is different? And if so, how do they react? Maybe some of the kinder kids try to cheer him up even though he's not in his normal state.
Well, it could be about Foxy suddenly not being able to perform his usual tasks in the horror show. Maybe he has a mechanical malfunction that makes him seem sick, like his joints not working properly or his sensors going haywire.
Even the kids who visit the pizzeria could be main characters. They might be the first to notice that Foxy is acting strange. One of the kids could be really attached to Foxy and be very worried about him. This kid could try to get the staff's attention to help Foxy or even try to comfort Foxy on their own.
In this fanfiction, it could be that Bonnie's sickness affects his performance during the night at Freddy Fazbear's. Maybe he starts acting strangely, which scares the security guard even more. And the other animatronics might be confused about what's wrong with him. They could try different things like looking for spare parts to replace the malfunctioning ones in Bonnie that are causing the sickness.
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.
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.
In the 'joho gets sick fanfiction', it could be that Joho's illness is a mysterious one. His family and friends are worried sick. They search for a cure everywhere and in the process, they discover some secrets about Joho's past that are related to his current condition.
In the 'jace gets sick fanfiction', it might involve Jace getting a mysterious illness. This leads to a search for a cure, with his family and allies scouring the land for rare herbs or magic spells to heal him. They face many challenges along the way, such as dangerous creatures guarding the ingredients they need.
Maybe Sonic's friends will take care of him. They could bring him medicine and make sure he rests. For example, Tails might use his inventions to find a quick cure.
Maybe Kenichi gets sick just as a big tournament or important event is about to happen. His team has to decide whether to participate without him or wait for his recovery. This creates a lot of tension and internal conflict within the group.
Well, the plot could involve Robin's friends rallying around to take care of him. Maybe they bring him soup and keep him company while he's in bed recovering.
Well, one possible plot could be that Elsa's sickness is a magical ailment. Maybe she got it from using too much of her ice powers at once. Her sister Anna would then be worried sick and try to find a cure. She could search all over Arendelle and even beyond for someone who can help Elsa get better.