I stumbled across this image by surrealist painter Jarosław Kukowski recently and it really made me want to DM. I'm bored by orc-like humanoids but these would be creepy to encounter in the underworld.
I've been thinking about them, decided to call them the Unborn, but have no desire to explain their origin. The only sound they make is the quick inhalation of breath, as if surprised. Some say this is them realizing, over and over, that they live. Cutting their flesh open reveals dry, gristly meat almost like sausage.
I went looking for more, for similar artist's visions I could warp into dungeon creatures and came up with these:
Another by Kukowksi:
And three by Chet Zar:
These interest me as realistic, but strange and frightening. I can't wait for players to encounter the Unborn. What would you call these others?