I designed a creature for a pc game (third person shooter) which is a creature that has no mouth but however possesses a huge hostility against its surroundings. It has two arms that connect to a small rotative joint (360) that contains two elbows with two arms, so that means it can hold a weapon on one arm and reload it with the same arm in the other arm, sounds complicated but below is a sketch and a MSpaint drawing.
Description, its skin is like the skin of a soft baby but is more muscular and it's joints have a "foreskin" that prevent dust and dirt from getting in between the open skin joints that allow unlimited 360 spins. its torso however can tilt by sliding on the U shaped flesh-joint.
It's born as a foamy substance attached to a random school toilet pipe, when girls throw bloody tampongs it is provided protein and when boys wank off or flush down used condoms the creature "consumes" it and i grows inside the pipe until it bursts and it begins hunting down it's prey, high-school students.
here are my sketches:
This is the paint version (excuse me, the uploader tool size limit did not allow me to upload the original size)