Item #:

Object Class:

Special Containment Procedures:

Description: SCP-XXXX is a 19-year-old human male1. Due to an unconfirmed event in the past, SCP-XXXX is able to support the continued life of a serpentine organism of undetermined species within his digestive tract.2. No further anomalous traits wave been observed in SCP-XXXX.

How SCP-XXX-1 is able to survive within SCP-XXXX's digestive tract is unknown. It is hypothesized that SCP-XXXX-1 and SCP-XXXX survive symbiotically, with SCP-XXXX-1 siphoning nutrients and oxygen from SCP-XXXX, however, SCP-XXXX-1 should not be able to realistically survive off of the nutrients SCP-XXXX consumes. It is unknown if worsening the state of SCP-XXXX will affect the state of SCP-XXXX-1, but testing into this is not planned at the time.

To date, SCP-XXXX-1 has made no hostile actions towards SCP-XXXX, and the presence of SCP-XXXX-1 inside SCP-XXXX makes no noticeable changes to SCP-XXXX's physical wellbeing.

Under most circumstances, SCP-XXXX-1 will remain motionless inside SCP-XXXX's digestive tract. SCP-XXXX has revealed SCP-XXXX-1 causes no physical discomfort when in his digestive tract. However, when SCP-XXXX is attacked, whether it be physical or mental, SCP-XXXX-1 will become highly agitated and will attempt to exit SCP-XXXX through its esophagus. SCP-XXXX can resist SCP-XXXX-1's movement to a certain degree, but since it is believed SCP-XXXX-1 acts independently of SCP-XXXX, it cannot be reliably contained inside SCP-XXXX.

If SCP-XXXX-1 is successful in exiting SCP-XXXX, it will launch itself out of the oral cavity of SCP-XXXX and onto the nearest surface. SCP-XXXX-1's skin produces a vicious, black, mucus-like substance. This substance allows it to reach unusually fast speeds, able to reach speeds of up to 8 meters per second. In approximately 70% of cases, SCP-XXXX-1 will proceed to attack the source of SCP-XXXX's physical or mental assault. After the individual responsible has been immobilized, SCP-XXXX-1 will return to SCP-XXXX and forcefully enter SCP-XXXX's oral cavity and settle back within SCP-XXXX's digestive tract.

SCP-XXXX has revealed that he possesses no control of SCP-XXXX-1 actions when it is in or outside his body and has repeatedly expressed anger and frustration with SCP-XXXX-1 actions during testing.

Addendum.XXXX.1: Test Log

Note: The following is a series of tests involving SCP-XXXX and SCP-XXXX-1 to test the anomalous capabilities of SCP-XXXX-1. Tests supervised by Dr. Lee and under the protection of Site Security Agents Mendrella and Basil.

Test 1:
Objective: To determine the extent of SCP-XXXX-1's agitation.
Procedure: D-24-3553 was instructed to have a friendly conversation with SCP-XXXX for 8 minutes.
Result: D-24-3553 discussed common hobbies between himself and SCP-XXXX for 8 minutes. X-ray scans report no movement in SCP-XXXX-1.

Test 2:
Objective: To determine the extent of SCP-XXXX-1's agitation.
Procedure: D-24-3553 was instructed to express extreme distaste in hobbies discussed in Test 1. The test is to last for 8 minutes.
Result: SCP-XXXX-1 exited SCP-XXXX with little resistance, but made no effort to attack D-24-3553. D-24-3553 expressed shock and recoiled in surprise, retreating to the far corner of the room, shouting expletives. SCP-XXXX-1 returned to SCP-XXXX through his oral cavity. D-24-3553 requested no further testing with SCP-XXXX. Request denied.

Test 3:
Objective: To determine the extent of SCP-XXXX-1's agitation.
Procedure: D-24-3553 was instructed to verbally assault SCP-XXXX, although he is to refrain from making physical contact with SCP-XXXX.
Result: D-24-3553 did not initially comply with instructions, but after prompting by security, D-24-3553 complied. D-24-3553 began insulting SCP-XXXX over his appearance and clothing. Within 3 minutes, SCP-XXXX-1 exited SCP-XXXX with minimal resistance and began to approach D-24-3553, who began to hastily back away from SCP-XXXX-1. SCP-XXXX-1 bit D-24-3553 in the calf and retreated back to SCP-XXXX. D-24-3553 was immediately rushed to the site infirmary and was treated for a venomous snake bite. D-24-3553 showed signs of paranoia and anxiety while under medical care, but he slowly recovered over a period of several days. The venom in D-24-3553's system did not match any known venom samples in the Foundation database.

Test 4:
Objective: To determine the extent of SCP-XXXX-1's agitation.
Procedure: D-24-3344 was instructed to verbally threaten SCP-XXXX, but refrain from making physical contact.
Result: Similar results as Test 3 occurred. After being bit by SCP-XXXX-1, D-24-3344 was placed in an observation room to observe the effects of SCP-XXXX-1's venom. D-24-3344 began producing heightened levels of hormones associated with paranoia, complaining about seeing SCP-XXXX-1 out of his periphery vision. D-24-3344 expired after 25 minutes after being bit by SCP-XXXX-1.

Test 5:
Objective: To determine the extent of SCP-XXXX-1's agitation.
Procedure: D-24-1123 was instructed to threaten SCP-XXXX with a nonfunctional firearm.
Result: Approximately 8 seconds after D-24-1123 entered the testing chamber, SCP-XXXX-1 was quickly ejected out of SCP-XXXX's oral cavity. SCP-XXXX-1 slithered to D-24-1123 and proceded to wrap around and consume him, similar to the hunting and feeding methods of constrictor snakes. D-24-1123 was consumed by SCP-XXXX-1 in less than 3 minutes. Once D-24-1123 was swallowed completely, SCP-XXXX-1 appeared to digest him at an anomalous speed, becoming its normal size in fewer than 20 seconds. SCP-XXXX-1 returned to SCP-XXXX with no further incident.

Extraneous tests redacted.

Test 11:
Objective: To test the parameters of SCP-XXXX-1's agitation.
Procedure: SCP-XXXX was restrained and hooked up to an automated machine. SCP-XXXX was > given one mild but painful electric shock by the automated machine.
Result: X-rays indicate no movement in SCP-XXXX-1.

Test 12:
Procedure: SCP-XXXX was restrained and hooked up to the same machine in Test 6. However, D-24-8675 was instructed to activate the machine while in direct eyesight of SCP-XXXX.
Results: After mild resistance from D-24-8675, the machine was activated. SCP-XXXX began > shouting expletives at D-24-8675, moments before SCP-XXXX-1 was ejected from SCP-XXXX's oral cavity. SCP-XXXX-1 proceded to constrict and consume D-24-8675 in a similar way as D-24-1123 in Test 5 despite strong resistance.

Extraneous tests redacted.

Test 20:
Procedure: SCP-XXXX was restrained in an upright position. D-24-9811 was instructed to fire a nonlethal firearm at the ceiling of the testing chamber, then immediately board a vehicle that will accelerate away from SCP-XXXX.
Results: D-24-9811 followed instructions and successfully boarded the vehicle. SCP-XXXX-1 ejected itself from SCP-XXXX and began chasing D-24-9811, using its mucus coating to travel faster than the vehicle and attack D-24-9811.