Its extremely glitched version of PNM and thats all.
When seen at cameras, he will glitch it extremely. He goest at this pattern:
Character Prep 1
Or Meat Freezer, Longue and office.
The players needs to shut the power off to stop him. Failure to do so will cause PNM to jumpscare the player. His scrapped behaviour is that he actually kills, instead of disabling all devices.