SCP-173, also known as The Sculpture, is a creature from the SCP Foundation, a fictional organization that works to keep anomalous objects, places, and creatures secret from the rest of the world. SCP-173 is an animate statue made of concrete and rebar, painted with Krylon brand spray paint. It occasionally leaves a reddish-brown substance on the floor, which is "a combination of feces and blood".
SCP-173 is completely still while in an organism's field of vision, only moving when it isn't being watched, even if the observer simply blinks, or barely looks off the object. Moving forwards covering short distances with the sound of grinding stone in the amount of time it takes for a human to blink, the statue advances towards its target until it is in range, then snaps its victim's neck.