SpottedHawk

Object #: SCP-XXXX

Object Class: Euclid

Special Containment Procedures: SCP-XXXX is to be contained with its host in a two-room cell furnished with a bathroom, bed, a bookcase filled with fiction books and biology textbooks, one office chair, and a writing desk with paper and crayons. At least one security door is to be sealed at all times, and all Class 1 or higher working with SCP-XXXX are required to wear hazmat suits in order to prevent contamination. To prevent potential escape, and/or use of SCP-XXXX's defence mechanism, SCP-XXXX is not permitted to be removed from its cell without residing within its host. To prevent outside contamination, a modified hazmat suit must be worn by SCP-XXXX-1 before leaving the cell. All security personnel dealing with SCP-XXX must be dressed in armour-plated, anti-contamination suits.

Description: SCP-XXXX is a grey, liquid organism that shares a mutualistic symbiosis with its host. Tests conclude that when inside its host, it resides within the spinal column, circulatory system, and brain. Once out of the host's body, it will form chemical bonds with various gases in the air, increasing its mass and structural integrity. The mechanism used is not fully understood and remains under investigation.

SCP-XXXX-1 is SCP-XXXX's current host. SCP-XXXX-1 is a Caucasian male, 22 years old, 183 cm high, heavily built, somewhat overweight, and unusually pale. SCP-XXXX-1's weight is approximately 101kg with SCP-XXXX, and 94kg without. SCP-XXXX-1 is seemingly calm and non-hostile, but have on several occasions attacked personnel.

While outside of the host body, SCP-XXXX behaves as an amorphous self-supporting ambulatory mass. It is capable of replicating a number of shapes appropriate to its situation. Observed shapes have included a human female (assumed to be for companionship), a human male (of significant physical dimensions and assumed to be for protection), and various quadruped forms.

SCP-XXXX primarily behaves as a companion and protector of SCP-XXXX-1, its current host. When the host is placed in danger, SCP-XXXX will respond by making threatening or aggressive movements and sounds and changing forms as appropriate. If this is not sufficient to dispel the threat, an alternative defence mechanism is employed. SCP-XXXX releases a number of unidentified neurologically active compounds into the atmosphere, causing nearby humans and most large mammals to flee. Subjects have described feelings of intense dread and an unremitting fixation with personal danger.

On several occasions when the latter defence has been employed, SCP-XXXX has been observed to take the form of a human child, and behave in a playful manner towards the now disoriented and terrified subject. This is assumed to be some form of mockery, or jesting, and it is unknown whether it is for the benefit of the host or an indicator of more complex intellect within SCP-XXXX. Further testing with dangers immune to either defence has yet to be approved.

SCP-XXXX-1 has unusually thick bone density; which might be related to being SCP-XXXX's host, seeing as an average frame would be unable to support the additional spinal weight. This has caused certain Foundation scientists to encourage tests on SCP-XXXX and SCP-XXXX-1, in order to find out what causes this change, as well as possible future applications.

SCP-XXXX and SCP-XXXX-1 were brought to the foundation's attention when a man called the police after witnessing a large volume of fluid coming out of SCP-XXXX-1's mouth and nose, which then took the form of a human female, approximately his size.

Agent ████ and ███ were sent to investigate a call that came from a secluded fishing village in the northern parts of ████, 5/7/████. SCP-XXXX and SCP-XXXX-1 were successfully detained █ kilometres north of the village, albeit at the loss of Agent ███.