
What happened to the Missing People in Security Breach?
The missing people of Security Breach is one of the most forgotten plot points in all of FNAF. Gregory mentions it to Freddy super randomly, and we see a newspaper talking about them in the Bad Ending in relation to Vanny.
What happened to these people? Cryonide recently made a video about this that I thought was pretty good, however I disagree in an important place.
I think the key to this mystery are the Caution Bots of all things.
In Security Breach: Ruin we can deactivate 28 Caution Bots using the VANNI Mask, which reveals a secret room in Bonnie Bowl containing Glamrock Bonnie.
Very interestingly, inside Ruin's debug mode the Caution Bots are referred to as "Caution Bot Souls" which tells us these robots somehow have souls. Further evidence for this is that inside the VANNI Network you can hear the cries of what sounds like children coming from the Caution Bots until they're deactivated.
Another interesting mystery around the Caution Bots is their connection with Glamrock Bonnie, who multiple Caution Bots surround inside of the secret room.
Deactivating the Caution Bots deactivates Glamrock Bonnie fully, which tells us the Caution Bots somehow powered Glamrock Bonnie.
I believe this tells us everything we need to know. The Caution Bots are possessed by the souls of the Pizzaplex victims. The Caution Bots are then connected to the entire Pizzaplex through the VANNI network, which is already shown to be able to control the Pizzaplex's electricity in Ruin. The Souls trapped inside the Caution Bots would be used to somehow power parts of the Plex', including to an extent the animatronics. It may also interact uniquely with Mimic endos, which the Glamrocks are theorized to be, as in Secret of The Mimic and Tales From The Pizzaplex we learn that the original Mimic endoskeleton is brought to life through some paranormal means and later changed into a violent entity by Edwin's agony.
Remnant is already known to be a power source for animatronics so it makes sense for Fazbear to do this. Additionally "hiding" the ghosts inside of innocent Wet Floor robots would cover up the haunting, while the effects from the Remnant would be able to be spread across the Pizzaplex somehow through the VANNI Network.
I think this fits very neatly with all the available evidence and explains why the Caution Bots are where the souls are. As they're just the mobile storage for them. This would also fit with Glitchtrap’s motives, as the souls would be trapped inside of his virtual world for him to interact with for whatever he wants to do with remnant.