Commonly known as the first SCP, SCP-173 is a Euclid class living statue made of concrete, rebar, and traces of Krylon brand spray paint. No, the object does not copy the Weeping Angels as 173 came out 1 year prior.
D-Class: Gotta blink *blinks*
D-Class2: Gotta Blink *waits for confirmation*
D-Class3: Go ahead *D-Class2 blinks*
*D-class1 blinks without confirmation*
*SNAP* D-class2: Oh god we're gonna die! *D-class2 shuts eyes*
D-Class3: EXPLETIVE REDACTED
Upon later investigation it was found that SCP 173 kiled each D-class when they were not looking or blinked, further research pending.