SCP-031 is an amorphous organism, with a mass of 75 kilograms. SCP-031 is able to move at a pace of 3 km/h, and leaves a trail of oil when it moves. It is only capable of rudimentary physical movement. Testing of recovered tissue samples has shown that SCP-031 is at least partially composed of human muscle and epidermal tissue. SCP-031 is capable of reproducing human speech in any pitch or tone, although it is not currently known how SCP-031's biology produces them.