Skin Stealer

Entity 10, more commonly known as the Skin-Stealers, are large humanoid entities that can wear the skin of their victims as a disguise. They eat human flesh when in a hunger state, and otherwise roam aimlessly if they do not need to eat. Their blood is translucent, and they can mimic human speech. They are most commonly found on the first 4 levels, but have been reported in several levels.
Skin-Stealers are typically docile creatures and will wander aimlessly if they do not need to feed. In this stage, they will not be hostile unless you aggravate them. In a hunger state, they will seek out humans wandering alone and will then use their strength to tear them apart with their hands.
Skin-Stealers are tall, pale yellow humanoids with sunken white eyes. Their outer layer of flesh is covered with microscopic bumps similar to the suckers of an octopus' tentacle. These stick to skin that is torn off of humans, and push and pull on it to make it fit, until the Skin-Stealer looks identical to a human. These bumps also pump blood and nutrients into the skin, to make it feel warm and alive as well as prevent decomposition. In addition, it heals the skin, hiding any cuts that may identify a real human. After a period of around 24 hours, the skin will be digested through the surface of the Skin-Stealer, and the Skin-Stealer will enter a docile state. A Skin-Stealer also has the ability to speak, but it cannot understand language. It will repeat what it hears (often in varying languages) in order to lure in prey, but it cannot actually communicate. Although, since a typical Skin-Stealer rarely uses their voice, this is not a good way to tell them apart from real humans. The blood of a Skin-Stealer is completely translucent, so a good way to identify a Skin-Stealer from a normal person is by their blood.