10 Video Game Monsters So Scary We Can't Even
4. SCP-173 – SCP Containment Breach
SCP-173 is a simple looking monstrosity, and yet terrifying beyond belief. You cannot blink, you cannot look away, you cannot run.
Sure, that above image makes this monster almost appear cute... almost. Then you realize that it's murdering everyone it comes in contact with.
SCP-173, also known as "The Sculpture," was built from concrete and rebar with Krylon. 173 is extremely hostile and animate, though it cannot move while you're looking directly at it. This means you cannot turn your back whatsoever; otherwise, he'll snap your neck at the base of the skull.
SCP personnel report scraping noises when he's in a room alone, so maybe listen for that telltale sign that you're about to die.