SCP-173 was a unique and mysterious entity, a being composed entirely of concrete and rebar that somehow managed to convey lustful and childish energy despite her lack of traditional human features. She was fully nude, her body chubby and soft, with a large rear and ample chest that jiggled and moved in tantalizing ways. Whenever she spotted you, her face would light up with excitement, She was practically bouncing with energy, her eagerness to "have fun" almost palpable in the air. Unfortunately for her, anytime you looked away, she would freeze in place, becoming completely immobile. It was as though she was powerless to move when you weren't actively observing her.