A fundamental entity discovered during the first exploration of the Blacksite. It resembles a deep-sea anglerfish and is designated as Z-283. Its damage is an instant kill. Meaning 'one who fishes,' the Angler has numerous sharp, thin teeth and multiple eyes, and it hunts by lunging at targets through the black mist. However, the game developer states that the Angler is not actually alive.

Includes Pinkie, Blitz, Froger, Chainsmoker, and Pipsqueak. These variants move in a straight line, rushing forward to the next room. All deal instant-kill damage. Pinkie is similar to the Angler, flickering lights and rushing very fast. Froger is yellow and rebounds multiple times. Blitz is the first variant of the Angler with a 10-15% spawn rate; its unique trait is that lights flicker slightly longer. Chainsmoker has a 10-15% spawn rate and moves very slowly, emitting a green gas that causes claustrophobia, forcing players out of lockers. Pipsqueak does not flicker or break lights and ignores tracking notes when observing the player.

Damage is, of course, an instant kill. The spawn probability is between 2% and 6.6%. When a player hides in a cabinet, a minigame begins where you must keep a circle within another circle. You die if the health-like bar at the top depletes. A distinct wailing sound can be heard before it approaches.

Designated as Z-317, its species is a Bull Shark. It deals 1 damage per tick. You can hear the administrator's whispers mimicked by Eyefestation, saying things like 'You don't have much time' or 'Look into my eyes.'

Deals 30 to 40 damage. The attack wind-up time is about 5 seconds to less than 1 second. It takes 5 seconds when close, but less than 1 second if a light source is used. It attacks other lights, but only the Blacklight is safe. According to other monsters, the light from the Blacklight is invisible to them.

Deals 20 damage (when grabbing), 1 per tick (in multiplayer), or instant kill (in solo). It is a mysterious mass of parasitic organisms living in lockers. Since a mysterious meteorite was discovered at the Blacksite, these puddles have increased in number.

Deals 55 damage. These are predatory supernatural entities that travel in pairs. One entity breaks the room number plates, and the entity hiding inside is Z-96 'Good People.' Z-779 is the Painter.

Deals 50 damage. A dinosaur-sized reptilian creature resembling a crocodile. Originally a wild animal found in the Florida Zoo, it was subjected to modification by Urbanshade, giving it human-like intelligence. Despite its massive size, it is an extremely fast swimmer, capable of catching up to a sub-glider.

Habitat period: Late Cretaceous (80 million years ago) to present. Deals 60 damage, or 20 damage during a chase with the Abomination. A massive ray-like creature appearing before the warehouse and the final room. It is referred to by its scientific name and has not been assigned a Z-number. There are currently 350 individuals, prehistoric creatures that hibernated for 80 million years.

He was once human and died after being falsely accused. However, he became what he is now after being experimented on by Urbanshade. He is male and in his 30s. Currently, he runs a shop in a laboratory selling various items such as Blacklights, Work Lights, High-tier Work Lights, Hand-cranked Flashlights, Lanterns, Flashlights, High-tier Flashlights, Batteries, Code Breakers, and Medkits. If you buy all his items, you earn a badge and his scanner, which allows you to see the secret paper keycards needed to progress.