First, things relevant to request: Request whatever you want, but I won't do lemons! Feel free to request as many times as you want, as long as you have ideas, I'll have fun writing them out, though I'd like it if you kept it one request at a time...
I'd prefer to write characters that are in the series, but if you want an x Reader, I could try it! Would be my first time though and you should give me a feature of said reader so I won't give them the most empty character ever.
When you're requesting, you may want to clarify the scenario you want to see them in, what kind of relationship they have (friends/crush/together) and, since it's FNAF, the gender (for example I usually see the Marionette as male, but don't really mind if you want it to be female. Actually if you think about it, Sister location and FNAF 6 showed that souls can be overtaken by their programming, so if we put a female soul into a male robot, would that- okay, I'll stop)
If you don't say anything, I'll probably make the character male, since I simply prefer male characters... don't ask me why, I can't explain it.
The universe is a clusterfuck, if you don't know the free(!) fan game Dayshift at Freddy's, you might get confused. I try to only focus on the characters in the request, but I'm saying just in case.
Something that might give you an idea about all the confusion, is Henry! I prefer to see him as William's actual partner, murdering together with him, even if it's obviously not canon.
More details mean that I more likely will do what you want ;3

Second, things relevant in general: I'm from Germany, get ready for weird grammar. Still, I'm trying my best, if you find a bothering mistake, point it out, I'll fix it.
This is just a way of saying thank you, but since I write other stories that are really series with deadlines ("A Guard's life", "A series of bad ideas and (mis)fortune, hosted by an Orange Guy" both on Archive Of Our Own), I might take my time with your request. Feel free to message me as often as you want to ask how the progress is, but if you appear impatient I might be tempted to rush more... which would take away from the "quality" of your one-shot. Sorry for that :/
Comments as much as you want! Criticize or compliment, in both cases an explanation would be even better! If you don't feel like judging, a simple "was nice, have a good day" or "not really my cup of tea, but it was okay" is enough to make me smile and feel as if writing actually reaches people. Don't fear to nitpick either! I now how annoying little habits in writing can become and I'd hate for anyone to stop reading, just because of a small flaw that I should be able to fix!
Due to my inexpirience with this website, I'll just mention this: I reread and fix my stories a LOT. I don't know if you get notified about that, but if an already plubished chapter gets updated, it just means I fixed some spelling error or similar. :3
EDIT THAT I SEEMED TO HAVE OVERLOOKED:
I write plenty of triggering content in various ways. I will not always have it tagged or in the author notes. I have characters who curse and use the most foul language that can hurt- and I enjoy themes that are dark and would be extremely unhealthy in real life.
When opening this, I wish for you to be in a good mental state, in case that something I have created will push your buttons just the wrong way. I mean no harm and I'm not too versed in all the things that could or could not be triggering.
Please exert caution when reading!

I think it's a bit unnecessary, but a reminder to be kind to each other as well as me, since it's... welp, nice! Really though, I haven't encountered anyone mean on here yet and I'd LOVE to keep it that way x3
(Of course, criticism can and will be harsh if it's deserved. I give everything to not take insults against shortcomings in my story personally, yet if you simply insult or don't explain yourself, then I won't be able to take you seriously, sorry...)

Last, but not least... enjoy!

... I F=CKING FAILED TO PUBLISH THIS FIRST. EVERYONE, DON'T TRUST ME TO BE COMPETENT WITH ANYTING. This is gonna be GREAT...