Details: SCP-163 was not able to recognize the "smiley face" which 
human infants are able to immediately emulate. It was not until the 
eighteenth image that SCP-163 reacted by taking the card and 
placing it over the front of Dr. 's faceplate. Image 18 had 
exaggerated facial features which included a nose, eyes, ears, and 


an open mouth showing a row of straight teeth. Image 17 was 
identical but with a closed mouth. 


Experiment Log 163-47: Facial recognition. 


Date: - -20 

Subject: SCP-163 

Procedure: Dr. entered SCP-163's enclosure carrying twenty 
(20) 11x17 cards with images printed on them with UV-absorbing 
inks. Images were representations of the top of SCP-163's body, 
ranging in complexity from an isosceles triangle to a photograph of 
SCP-163. 

Details: SCP-163 did not recognize the first card as a member of its 
species. The second card, depicting an isosceles triangle with a 
horizontal line going through the middle, elicited a response. 
SCP-163 took all of the cards from Dr. and looked at each in 
turn. It then sorted the cards into two stacks, one which contained 
six images, including Image 1, and one which contained the 
remainder, including Image 2. It is hypothesized that the first stack 
includes images which can not be recognized as SCP-163's species 
while the second stack has images that can. The presence of the 
photograph in the second stack supports this hypothesis. 


Experiment Log 163-80: Altruism test. 


Date: - -20 

Subject: SCP-163 

Procedure: Dr. entered the enclosure carrying two wooden 
blocks and a box capable of holding both. Dr. opened the box 
and moved one block into it while feigning great effort. After closing 
the box, Dr. moved the second block toward it, again feigning 
effort, and awaited a response from SCP-163. 

Details: SCP-163 opened the box for Dr. after 10 seconds of 
him attempting to place the block inside while the lid was closed. 
The result is consistent with the same experiment performed on 
human children. 


Experiment Log 163-88: Higher functions. 


Date: - -20 
Subject: SCP-163 


Procedure: Dr. entered the enclosure with a cart containing 
an easel, five canvases, assorted brushes, and a selection of 
pigments which reflect different ultraviolet frequencies between 150 
nm and 300 nm. Dr. briefly demonstrated the act of painting, 
using three of the pigments, before handing the brush to SCP-163. 
Details: SCP-163 immediately began painting with the provided 
pigments. The image produced was of a landscape containing 
unrecognizable plants and animals, according to UV imaging. 
SCP-163 remained still for seven minutes after completing the 
painting before knocking it from its easel and retreating to a corner 
of the receiving room. Cranial ridges indicated distress. All further 
attempts at interacting with SCP-168 failed until Dr. attempted 
to remove the painting supplies from the enclosure. At that point, 
SCP-163's heavy manipulators were protruded from between its 
legs and indicated the negative gesture. The following day, SCP-163 
was seen painting on a new canvas. 


Addendum 163-88: 

As of this date, fresh canvases, paints, and brushes should be 
provided to SCP-163 whenever its supplies begin to go low. This is 
the first truly meaningful communication we have been able to 
understand. At the very least, we may be able to learn more about 
the ecology of its homeworld. -Dr. 


Addendum 163-93: 

The odds of SCP-163 having been discovered at all are mind- 
boggling, given the size of the Earth. A number of factors would 
have had to come into play, including plate tectonics, development 
of terrain by humans, and just plain old dumb luck. | am filing a 
recommendation that all excavations of -year-old strata be 
monitored by agents for more members of SCP-163's species. | find 
it hard to believe that we just happened to come across the one 
single spacecraft that crash landed on earth millions of years ago, at 
a time when we are just beginning to develop the capacity to 
recognize the importance of such a find. There must be others 
hidden in stasis somewhere down there. -Dr. 


« SCP-162 | SCP-163 | SCP-164 » 


SCP-164: Squid Tumors 


Item #: SCP-164 
Object Class: Euclid 


Special Containment Procedures: Cultures of SCP-164 should be 
contained using standard Class-3 biohazardous procedures, and 
stored clearly marked within a refrigerated biocontainment unit at 10 
degrees Celsius. While pathogenic, SCP-164 is not highly infectious; 
while researchers working with raw cultures or infected subjects 
should use caution, latex gloves and face masks are generally 
effective at preventing the spread of the disease. Any personnel 
inadvertently infected will be subject to six months of chemotherapy 
upon first showing symptoms, and surgery as necessary. 


Civilian outbreaks should be handled using cover-up procedure Alef- 
for contagious materials. 


Description: SCP-164 is a strain of cancerous cells that causes 
sarcoma-like tumors in host bodies. While cell DNA appears to be 
primarily derived from human DNA, the cells now effectively exist as 
unicellular, asexually-reproducing parasites. Several characteristics 
make SCP-164 remarkable: 


¢ SCP-164 is the only parasitic (transmittable) cancer known to 
infect human beings. Strains are transmittable through, in 
order of infectiousness: blood contact, sexual intercourse, skin 
contact, and airborne contact. Chemotherapy and surgery are 
effective in treating the disease in nearly all stages. 


* Tumors produced by SCP-164 that grow larger than a certain 
size will, in 75% of cases, follow normal behavior for 
cancerous sarcomas. However, in 25% of cases, host bodily 
materials will be utilized for the creation of a new, separate 
organism inside the tumor. In the case of multiple tumors, 
some or all may follow this behavior. Said organisms will 


apparently begin as zygotes (fertilized ova) and replicate, 
much like fetuses. Externally, this appears no different from 
normal tumor production, and may go unnoticed in initial 
stages. 


Oddly, mature organisms identify as being completely unrelated to 
the original tumors, corresponding with a previously unknown 
species of order Teuthida (squids). Removal of organisms shows 
they are entirely viable in marine conditions, and will perform normal 
actions such as locomotion, catching food, basic defense, 
reproduction, et cetera. However, said organisms will also remain 
entirely viable in the original tumor, rarely moving or shifting position, 
continuing to grow at a regular rate until the host is killed. The 
existence and nature of the organisms (SCP-164-2) is often not 
realized in civilian cases until biopsy or surgery reveals the 
developed organism. 


SCP-164 organisms and tumors may interact with host physiology in 
interesting ways. The following cases are particularly notable: 


* Female D-Class, 23 years old: SCP-164 tumors spawned on 
uterus walls. Host body apparently recognized the tumor as a 
human fetus, and was delivered normally containing viable 
SCP-164-2 specimen after 9 months. 

¢ Male D-Class, 30 years old: Tumors spawned on the spinal 
cord, disrupting the central nervous system. As a result, 
movement from SCP-164-2 would occasionally cause 
subject's limbs to flail, suggesting a “cross-wiring” of the 
nervous systems of the two organisms. Biopsy lent support to 
this hypothesis. 

¢ Male D-Class, 25 years old: Tumors spawned near the 
esophagus and windpipe of the subject, in a location that with 
ordinary growth would normally have blocked off said 
passages and quickly killed the subject. Instead, the growth of 
the tumors shifted to the back of the neck, preventing subject 
from dying before the normal point. Doctor suggests that 
this may have been a deliberate action taken by SCP-164. 


« SCP-163 | SCP-164 | SCP-165 » 


SCP-165: The Creeping, Hungry Sands of Tule 


Item #: SCP-165 
Object Class: Keter 


Special Containment Procedures: Housed in a facility at Armed 
Bio-Containment Area-14, SCP-165 is to be treated as a contagious, 
pathological organism. The highest sterilization and quarantine 
procedures are to be followed. 


Microwave field generators around SCP-165's area are in place to 
restrict movement of its dune within its containment area. Once 
every nine (9) days, SCP-165 is fed live cattle weighing at least 
seven hundred fifty (750) kilograms. 


Description: The organic component of SCP-165 resembles that of 
typical parasitic mites, seven hundred fifty (750) micrometers in 
length, with eight (8) legs and a genetic structure similar to the 
house dust mite. The main difference is the hermit-crab-like 
behavior of attaching grains of sand to its back. It is unknown what 
purpose the sand serves, but the massive colony of SCP-165 
numbers in the hundreds of billions to possibly trillions, creating a 
rather large dune. 


The similarities between [DATA EXPUNGED] and SCP-165 are only 
superficial. [DATA EXPUNGED]'s colony is protozoan in nature and 
apparently shows a collective intelligence and awareness that is not 
understood. SCP-165's colony is made up of individual Acari who 
don't show cooperation but rather competition in the hunt for food. 
Like mosquitoes, they rely on chemical detection of carbon dioxide 
and sugars in the air to detect prey. The Acari mites roll and bound 
over one another toward prey, only using their legs to climb over one 
another. When in contact with the flesh of animals, they release a 
numbing chemical toxin in their bite, similar in make-up to that of 
mosquito and flea bite toxins. Subjects are typically unaware that 


millions of mites are ‘taking turns’ at grabbing mouthfuls of its flesh 
as they swarm around their victim. 


A typical swarm resembles a swirling vortex around a victim or 
victim's appendage. The SCP-165 colony is efficient enough in their 
competitive swarming that most animals' appendages can be de- 
fleshed and reduced to bone within minutes. The numbing toxin is 
so effective that sleeping victims may not wake up as their limbs are 
eaten away. 


The Acari mites are resistant to all but the most dangerous of 
pesticides. They retreat from heat and will often seek shade when 
available, being the most active during the night, hunting for large 
sleeping prey. Their vulnerability to heat is the most preferable 
technique for containment. 


Addendum - Acquisition: It is apparent that the US Government 
has been aware of dunes of SCP-165 for some eighty (80) years. 
The area where SCP-165 was found is now a forgotten German 
immigrant ghost town of Fredricksburg, Arizona, in the Tule Desert 
near the Goldwater Air Force Bombing Range. 


The remote town of Fredricksburg was founded sometime in the late 
1800s and by 1908 had become a ghost town. A passing cavalry 
troop reported that the inhabitants had disappeared and that the 
buildings were empty. They attempted to stay one night in the 
abandoned hotel, only to have seven (7) of their horses reduced to 
piles of bone. All but four (4) of the soldiers fled in the middle of the 
night, saying that sand was filling the building like a flood of water. 
Those four were never seen again. 


During the late 1950s, the U.S. military attempted to exterminate 
SCP-165 by turning the area into a bombing range. It was 
successful in reducing the numbers of SCP-165, but in the late 
1980s, it became apparent that a ground cleanup and extraction 
was needed to remove the presence of SCP-165. Mobile Task- 
Force Epsilon-9 (aka "Fire Eaters") were dispatched for containment 
and extraction of SCP-165. Upon entering the town of 
Fredricksburg, an upturned sign was found, reading "Vorsicht vor 
dem kriechenden, hungrigen Sand" which translates to "Beware the 


creeping, hungry sands." The flame accelerators of MTF €-9 proved 
highly successful in glassing the sand of SCP-165 and reducing its 
number to a manageable size. A living dune of nearly four (4) metric 
tons of SCP-165 was contained and transported to ABC Area-14 
where it is monitored and contained. 


**IMAGES RECOVERED FROM MTF €-9** 
Photograph '165-P1'; Fredricksburg, AZ, United 
Photograph '165-P2'; Fredricksburg, AZ, United 


Photograph '165-P3'; Fredricksburg, AZ, United 
States - , 198 


« SCP-164 | SCP-165 | SCP-166 » 


SCP-166: Teenage Succubus 


Item #: SCP-166 
Object Class: Euclid 


Special Containment Procedures: SCP-166 can be kept safely in 
a minimal security environment. As of - - ,SCP-166 is housed in 
a standard Class B suite at Site-17, with the following alterations: 


¢ The adjacent suite has been redesignated into a local 
observation post. 


¢ Translucent acrylic panels have been placed in the approach 
corridor and staging area to prevent direct line of sight into the 
containment suite from the exterior hallway. 


¢ Warning signs have been placed throughout the containment 
area indicating that no male personnel are permitted in the 
area. 


Reasonable requests for personal items and modifications to the 
containment suite may be granted upon approval by a Level 4 or 
higher authority. To date, SCP-166 has requested: 


¢ Acopy of the Holy Bible (Douay-Rheims, Challoner Revision) 
(granted). 


¢ A Catholic rosary (granted). 


Access to a Catholic priest for confession, mass, and other 
sacraments (denied). 


¢ Various books and magazines, mosily religious in nature 
(granted, pending review and approval of contents). 


¢ A telephone with which to contact the Abbess of the 
Convent in Cornwall, England (granted: SCP-166 


is to be allowed 1 hour of telephone time a week to this phone 
number only). 


SCP-166 is generally content to remain in her quarters, as long as 
she is provided with entertainment in the form of religious materials, 
books, television, and art supplies. In return for her cooperation in 
her own confinement, SCP-166 is to be allowed a 12-hour excursion 
away from Site-17 to an adjacent uninhabited island no more than 
once per month. Limited Release Protocol 19-A is to be observed in 
these cases, with the added restriction that no male personnel are to 
be allowed within 500 m of SCP-166 during transport, and no male 
personnel are to be allowed on the island during her stay. 


As even the lightest clothing tends to cause pressure ulcers 
(bedsores) within 45 minutes of constant wear, SCP-166 is allowed 
to go nude for medical purposes. Garments and bed linens are to be 
made of long-staple cotton, and should be changed weekly. 


Male staff are forbidden from viewing or entering the direct vicinity of 
SCP-166. Violation of this order will result in immediate disciplinary 
review and possible termination. At least one female staff member 
must remain in adjacent observation room at all times, and maintain 
direct visual observation of SCP-166 through viewing slits or closed 
circuit television. In order to minimize the risk of accidental 
exposure, all cameras and windows shall be equipped with 
translucent filters with at least 50% exclusion of detail. No 
permanent record shall be kept of any photographic evidence of 
SCP-166's appearance. 


SCP-166 requires no sustenance save approximately 1 cc of human 
semen, administered orally on a weekly basis. Arrangements have 
been made with a local sperm bank for this purpose. On-site 
procurement will be carried out in emergencies only. Despite the fact 
that SCP-166 requires no other sustenance, the subject can 
consume normal human food, and does do so. 


Due to SCP-166's many health issues, medical evaluations should 
be carried out at least once per week. 


Description: SCP-166 appears to be a female human in her late