Star Vampires

Star Vampires are normally invisible, their presence signalled only by a kind of tittering sound. After feeding, they become visible through the blood they drink.

Spectral Hunters

Spectral Hunters are rubbery-skinned humanoids with shark-like mouths and crab-like claws. They are typically guardians of a location or object, and can become invisible at will.

Lloigor

Lloigor are invisible, reptilian beasts, though they can create visible forms if needed. In the past they have enslaved humans and used torturous means to keep them in line. The remaining Lloigor now reside under the earth and sea.

Flying Polyps

As with the image below, Flying Polyps are generally rendered as buoyant, cancerous monstrosities. They live in caverns below the ground, are able to command the winds, and are able to turn invisible at will—though they naturally fade in and out.

Desh

The Desh are creatures from an alternate dimension that can be summoned to earth through the brain of a sentient being. They come in many different shapes and sizes, two samples of which are pictured below, named Lesser and Greater Desh. Lesser desh appear as large silvery tadpoles with limp, toothless mouths, and with a row of dark, bead-like eyes across their narrow heads. Their long limbs are tough and springy. Greater desh have slim, fish-like bodies with four long limbs knotted with cords of stringy muscle. Wide mouths bristle with curved, six-inch teeth. The top of the sleek head is crowned with a bundle of 2 to 8 lidless, plate-shaped eyes arranged in a crescent.