Lesser Void Fiend

Medium fiend, chaotic evil

Lesser void fiends are the foot soldiers of the Void's more organised intrusions. They are roughly humanoid in shape --- two arms, two legs, a head --- but the details are wrong. Their proportions shift when you look away. Their skin is a dark, oily substance that absorbs light. Their faces have too many features or too few, and which combination you see changes each time you blink. They are intelligent enough to follow orders, lay ambushes, and use weapons, but their intelligence is alien --- they don't understand mercy, fear, or surrender as concepts, only as things other creatures do that can be exploited.