oh- i get this ( this prob gonna seem crazy bc i aint a theroist)
this is a kid that will later become an animtronic, (taking place in the first fnaf location we play at in the timeline) but this kid has supernatural powers, (they can see the future, most are unaware) so he come to the restaraunt to see the robots, one that they will become someday. So this is a huge part of the game, they dont want to kill the nightguard, they want them to hep them get revenge on the killer. (this excludes the games when we play AS will)