SCP Foundation

SCP-173

SCP-173 is a sentient and extremely hostile sculpture constructed out of concrete and rebar with traces of Krylon brand spray paint. It is rendered completely immobile when observed by a living being but can move at inhuman speeds and perform lethal actions when unobserved. Contained at Site-19 since 1993, it has breached containment multiple times and is classified as Euclid. It excretes a combination of blood and feces, requiring routine cleaning by at least three Class-D personnel.

Intelligence

A Foundation Taskforce member described SCP-173 as having a human-like brain when possessing it. (source) (Autoerotic Assassination)
Perceives time similar to humans but struggles due to the monotony of containment. (source) (Rebar Nightmares)
Struggles with the monotony of containment. (source) (Exhibitionist Fantasising)
Communicates to other instances of itself through its eyes even when immobilized. (source) (The Doc Block)
Has a limited understanding of human speech and writing. (source) (Have A Heart)
Attempts an escape plan by dashing to the corner of its cell outside line-of-sight during monthly cleaning. (source) (Rebar Nightmares)
Pursues a group of Foundation agents through Site-19 by exploiting routes that allow it to close in unnoticed. (source) (Himinbjörg)
Comprehends abstract concepts like art, morality, spirituality, and existentialism. (source) (Ex Nihilo Nihil)
Comprehends abstract concepts like morality. (source) (Ex Nihilo Nihil)
Comprehends abstract concepts like spirituality. (source) (Ex Nihilo Nihil)
Comprehends abstract concepts like existentialism. (source) (Ex Nihilo Nihil)

Personality

Grew resentful towards captors for imprisoning it with their gaze. (source) (Crunch)
Concluded that killing is its life’s purpose. (source) (Crunch)
Finds pleasure from being looked at. (source) (Exhibitionist Fantasising)
Influences possessor to develop bloodlust. (source) (Autoerotic Assassination)
Satisfaction of killing is analogous to an orgasm. (source) (Autoerotic Assassination)
Will not kill those who come wanting death, out of spite or empathy. (source) (Crunch)
Will not kill those who come wanting death, out of empathy. (source) (Empathy)

Strength

Twists a man’s neck multiple rotations. (source) (It’s just paint, right?)
Possibly did not twist the neck, per investigation. (source) (Conclusions RE: D-173-2263 Incident)
Injures SCP-682 severely enough that it retreats. (source) (Experiment Log T-98816-OC108/682)
SCP-682’s superior size and regeneration prevented fatality from assault. (source) (Experiment Log T-98816-OC108/682)
Holds its own against SCP-682 in battle after being dismembered. (source) (Experiment Log T-98816-OC108/682)
Crumples several bulkhead doors. (source) (Himinbjörg)
Breaks SCP-096’s bones, previously impossible by any means. (source) (Consequences and Collarbones)
Enables termination of SCP-096 for good. (source) (Consequences and Collarbones)
Kills a man by slapping him 27 times. (source) (Now watch and learn, here’s the deal…)
Escapes from the grasp of a submarine claw. (source) (About Tree Fiddy)
Breaks through the shatterproof screen of a submarine. (source) (About Tree Fiddy)

Speed

Moves at an average 20-22 meters per second. (source) (Conclusions RE: D-173-2263 Incident)
Travels 10 cm and kills a man in less than 0.00001 second, equating to 10,000 m/s. (source) (high-hypersonic)
Suddenly appears in front of Foundation agents, surprising them. (source) (Himinbjörg)
Destroys three robotic drones in a fraction of a second. (source) (Re: The Statue)
Moves in a blur. (source) (Stepping Out)
Crosses entire continents within minutes. (source) (The Original)
Moves so fast it uproots trees and sends cars flying. (source) (The Original)
Snaps necks of Class-D personnel mid-sentence. (source) (The Promotion)
Slaughters 131 soldiers in a matter of minutes. (source) (Empty Spaces)
Kills three men at once after one sneezes. (source) (black white black white black white black white black white gray)

Speed Limits

Transversal can be interrupted, like slipping on banana peels. (source) (Now watch and learn, here’s the deal…)

Durability & Resilience

Remains active for centuries. (source) (The Original)
Quickly reconstructs itself when broken apart. (source) (Experiment Log T-98816-OC108/682)
Resists SCP-106’s corrosive phasing for months before breaking down. (source) (Snap. Crackle. Pop.)
Does not need to eat nor breathe. (source) (Re: The Statue)
Kills efficiently while submerged deep in the ocean. (source) (About Tree Fiddy)

Durability Limits

Clones can be put down by conventional gunfire. (source) (Dr. Edison’s Bargain Bin of Direct-to-Forum Sequels)
Can be destroyed by nuclear explosions. (source) (Revised Entry)

Senses

Detects light and can suffer flash blindness. (source) (Ex Nihilo Nihil)
Perceives and locates auditory stimuli. (source) (Anniversary)
Finds certain noises unpleasant. (source) (Rebar Nightmares)
Perceives its creator, who infiltrates Site-19 undetected. (source) (Anniversary)
Infiltrates Site-19 without detection by security. (source) (Anniversary)
Identifies Dr. Bright by smell, even in changed bodies. (source) (Revised Entry)

Senses Limits

Unresponsive to static stimuli; motionless entities may go undetected, possibly a sight limitation or non-registration as prey. (source) (Hunted)

Other Physical

Picks up a Valentine’s Day card. (source) (Have A Heart)
Extracts a human heart from a corpse despite lack of dexterity. (source) (Have A Heart)
Spray paint markings fade over time. (source) (The First, the Last)
Spray paint markings remain for centuries. (source) (The Original)
Has a painted-on wristwatch. (source) (The SCP-173 Christmas Eve Spectacular!)
Can put on and burn off weight. (source) (The SCP-173 Christmas Eve Spectacular!)
Does not need to eat but can if it wants. (source) (The SCP-173 Christmas Eve Spectacular!)

Excretion

Produces waste matter without sustenance. (source) (SCP-173)
Produces waste without apparent sustenance. (source) (Crunch Is A Beautiful Sound)
Excretions sabotage automatic cleaning systems by blocking electronics. (source) (Re: The Statue)
Alters excretions’ chemical makeup to eat through solid matter and kill people. (source) (Re: The Statue)
Destroys hardware of AI observing it. (source) (Re: The Statue)
Degrades any footage captured of it. (source) (Re: The Statue)
Nullifies anomalous effects of other SCPs. (source) (SCP-3246)
Only effective waste management is by at least three humans. (source) (Re: The Statue)
Blood in feces due to illness. (source) (Mary Sue Who)

Reproduction & Clones

Produces miniaturized duplicate SCP-173-1. (source) (Blood Is Thicker Than Water)
Produces ever-increasing identical copies overwhelming containment. (source) (Revised Entry)
SCP-038 clones SCP-173 that moves slower, persisting even under observation. (source) (SCP-038)
SCP-1459-1 instance bears traits of SCP-173 when input. (source) (SCP-1459 Extended Testing Log)
SCP-914 produces non-anomalous replicas. (source) (Experiment Log 914 - Part III)
SCP-914 produces another non-anomalous replica. (source) (Experiment Log 914 - Part XIII)
SCP-914 produces ‘17 Again (2009)’ version with SCP-173 in title role, movement tied to viewers. (source) (Experiment Log 914 - Part X)

Observation & Immobility

Immobilizes when observed by anomalous beings like SCP-682. (source) (Experiment Log T-98816-OC108/682)
Immobilizes when observed by SCP-131. (source) (A Chance At Freedom)
Immobilizes when observed by dismembered eye of god Barat. (source) (Relics)
Immobilizes when observed by AI. (source) (Re: The Statue)
Blinking one eye at a time does not maintain observation effectively. (source) (Crunch Is A Beautiful Sound)
Video feeds cannot capture motion, but individual frames can. (source) (Crunch Is A Beautiful Sound)
Individual frames capture movement. (source) (Conclusions RE: D-173-2263 Incident)
Compelled or fooled into immobility by reality-altering SCPs like SCP-3246. (source) (SCP-3246)
Behavior results from creator’s instructions, which can be changed. (source) (Anniversary)
New instructions can change behavior. (source) (Anniversary)
Unmonitored video keeps it immobile if watched later, but degrades from waste. (source) (Re: The Statue)
Video physically degrades from waste matter. (source) (Re: The Statue)

Miscellaneous

Victims’ deaths from neck-snapping or strangling are self-inflicted cervical fractures, no physical contact. (source) (Conclusions RE: D-173-2263 Incident)
Origin varies: constructed in 1987. (source) (Interlude - Excerpt From An Auction Catalog - Marshall Carter And Dark, 2012)
In Foundation custody as early as 1850s. (source) (Tufto’s Proposal)
In Foundation custody as early as 1850s. (source) (SCP-4867)
Creator referred to as male. (source) (Anniversary)
Creator referred to as female. (source) (Her Masterpiece)
Incarnation of ancient entities like Sightless Idol, High Golem, or Koitern. (source) (Relics)
Incarnation of High Golem. (source) (The Wandering Boy)
Incarnation of Koitern. (source) (Those Who Lived On)
Koitern waged genocide against a third of SCP-682’s kind. (source) (Those Who Lived On)
Koitern decimated a tenth of world’s population. (source) (This Is How the World Ends)
Worth at least 20 million dollars. (source) (Interlude - Excerpt From An Auction Catalog - Marshall Carter And Dark, 2012)
Violated by Dr. Clef. (source) (Date Night)
Offered normal life by SCP-343 but declined. (source) (Peanut Butter Crunch)
Frightens Keter-class SCPs like SCP-682 and SCP-106. (source) (Experiment Log T-98816-OC108/682)
Frightens SCP-106. (source) (Snap. Crackle. Pop.)
SCP-682 avoids confrontation during breach. (source) (Duke ’till Dawn)
Inspired formation of SCP Foundation. (source) (Tufto’s Proposal)
One of the most well-known SCPs. (source) (SCP-173-D)
Has an orange card in SCP-3301 board game. (source) (SCP-3301)
Featured in ‘Baby’s First Guide to Keter-Class Anomalies’. (source) (Baby’s First Guide to Keter-Class Anomalies & Other Questionable Documents Recovered from the Hard Drive of Dr. ▄▄▄ ▄▄▄▄▄▄)

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