SCP-173: The Sculpture

1. Anatomy of a Killer
SCP-173 is a construct made of concrete and rebar with traces of Krylon brand spray paint. To the casual observer, it is a piece of grotesque modern art. To the Foundation, it is a sentient, highly aggressive predator.
The entity remains completely stationary as long as it is within a direct line of sight. However, if visual contact is broken for even a fraction of a second—including the simple act of blinking —the sculpture moves with near-instantaneous speed. Its primary method of attack is the snapping of the neck at the base of the skull.

2. Containment Protocol: The Blink Warning
The containment of SCP-173 results in one of the Foundation’s most dangerous maintenance duties. The floors of its cell are constantly covered in a mixture of blood and feces—origin unknown. Cleaning must be performed bi-weekly by a team of three:
Entry : Two personnel must maintain constant eye contact with SCP-173 at all times.
Coordination : Before anyone blinks, they must call out “Blinking!” to ensure their companion is watching.
Exit : All three must back out of the room simultaneously, never breaking eye contact until the heavy steel door is sealed.
3. The Legacy of the First
SCP-173 was revolutionary because it shifted the focus from “the monster” to “the organization.” It invited the reader to imagine a world where monsters were so common they had serial numbers.
While the original image used for 173 was an artwork named Untitled 2004 by Izumi Kato, the myth has since outgrown its original face. It remains the absolute standard for “Cognitohazard” horror: something that is only dangerous because you perceive it—or stop perceiving it.