I've been always wondering what is this thing, my first thought that comes up in mind is a planet in space but I shouldn't forget that this is PYRO-ILLUSION and not Star Wars XD.

I did some investigation on this, tried brightening up the image, tried to think up what it is but I could not tell what it was.

Heres the brightened up image:

The brightening doesn't help other than it revealed 2 small visible pieces on the right side of the image. Also you would ignore the white stuff on it because that is the reflection of a light source I would assume so.

My first thoughts were that its a nose of some animatronic. I tried comparing this thing to other animatronic's noses like Roxy, Truddy and the New Character but none of them I have named matches this image. It could not even be a nose, it could just be an animatronic part on a body and if that is the case, I have no idea who it would belong to. It could also not be part of an animatronic but part of the map like the office, the cameras, the rooms.

Whatever it could be, Idk what it is. Maybe you guys could come up with ideas. For now, my biggest belief of the thing is the New Character's nose. It may not look the same but it may be because the way at what angle the object is taken screenshot of.

So theres my theory about that reflecting, plastic, black object of something.

(EDIT: Forget everything I said before. I've realized something. Its not a nose, its the dark hallway! That is the office hallway or I assume so, the dark hallway where you face it when you sit in the office. Also by looking at the full image, it looks like your in a suit? a mask? the sneaky peeky vent that Roxy crawls in as seen in the videos? This image shows the dark hallway but lighten up. Wokay, thoery done or at least I hope so. Go thank Bio in the comments for making me realize that I'm dumb.)