Per 
An odd almost shapeless entity that usually takes the form of a humanoid creature. Though smokey and seeming have no set form, it does have what appears to be a face. It's height can change at will though the height it usually takes is around 1.7 meters. It's form shifts and flickers almost as if the human brain can't quite grasp what the creature is really supposed to be. Like it is out of the human's realm of understanding. As if the human mind can't comprehend its existence. An seemingly random instances, the entity's form appears to glitch.
It is sentient and appears to have the ability to speak, but all attempts to communicate with it has failed. Almost. When they were able to talk to it, the only thing they can get out of it was indistinct words due to its voice seeming to glitch. When it does speak however, it causes those who hears it to feel the migraines similar to when one looks at the entity (discussed below) accompanied by a sense of confusion. It seems to speak in a language, that like it's appearance, is incomprehensible to the human mind. Likewise any attempts to describe the exact color of the entity has failed as again the answer seems to elude them. Sometimes people come up with different answers all together. Video equipment in its general vicinity are corrupted or sometimes destroyed my unknown means.
Those whom look at it within a average radius of 3 meters, though this number seems to fluctuate, usually start to experience a migraine, worsening the longer they're in it presence. They complain of a terrible pressure in their heads and nausea. Those standing closer to the entity experience an acceleration of these symptoms, and sometimes start bleeding from the nose. After as little as 30 minutes to 2 hours - depending on the distance from the entity - in its presence expire. Autopsies of the victims show no such internal damage, and in fact seem to be in better physical condition before the experience, even those with any kind of diseases or other ailments.
It's a cautiously curious creature, sometimes drifting over to those in it's presence and observes whatever they may be doing at that time. It seems to indeed express emotion, and is usually docile in the presence of others. It makes no attempt to be threatening in any way and is generally compliant when given orders, which confirms that the entity is able to understand what the personnel say.
Eventually it tries to acquire the forms of those frequently around it, i.e. the personnel that are currently stationed to it, as a poorly executed attempt to blend in with those around it (it's better than being a nearly shapeless blob)
