Group R-48 is a group that is centered upon finding and exposing supernatural activity, and they seem to have taken a ton of interest in the Freddy Fazbear Pizzeria's scattered across the globe due to its activity after-hours.
Founded after "The Bite of 87", Group R-48 was meant to research into the supernatural. After having no leads whatsoever, they turned back to the event, finding the costumers that where there that day and interviewing them, asking about any suspicious activity, most answers turned up negative and left the group with no leads. When the reopening happened, they managed to get a manager who worked for them to give them some information. Now, each manager in every Freddy Fazbear's Pizza is an informant and can be seen on certain nights sneaking around the pizzeria.