Your Still Life.

this entity is much more rare to see because they dont get spawned regularly. Bacteria is a tall humanoid thing. their body is just full of black wires and they are highly agressive and loud. nothing much to say. rumors say they are failed Still life entities.

nobody knows where Still life entities born from, either Backrooms creates them or they just come themselves. Still Life isnt an intelligent entity, its just a creature that was born to look like somebody out of real world, having a distant personality of the real human out of backrooms, their behavior changes depending on which person they are looking like. they cant choose who they are mimicking, they arent aware of being somebody else copycat. they just live in backrooms, if they are copycat of some bad person, their mood will be agressive and attack someone. if theres a good person, they will be passive until they will get really hungry, they cant feel pain, they cant talk. if a person they are copying enters the backrooms, they will target across entire backrooms and seek them instead of roaming around. Still life never looks perfect as their copycat, their face will be usually distorted, like having couple faces stuck on one or having an eye higher than the other. they also usually but not always quite tall. but still remain humanoid. if the person they are copying will change their ways and become a good guy, the Still life wont change, they will still act like their past old version.

The backrooms is another world, which can be found through no clipping by accident through a solid wall or even a floor, the spots of the invisible portals can be random and you can fell in the backrooms by accident. the backrooms itself is a endless maze of random placed rooms and walls with yellow wallpaper, basically an endless, labyrinthine maze of empty, abandoned, and nonsensical indoor spaces. They are the ultimate example of liminal spaces. a constant buzz of lumiscent light on the ceiling could be heard. the backrooms also has some Entities. you can get out of the backrooms by using same spot you came out from to comeback in real world. but if youll find more no clipping spots, you may accidentally get yourself somewhere even lower than backrooms which is not reccomended. the backrooms have randoms objects scattered everywhere, sometimes in piles or same object duplicated countless times in one room.