Ny’ghan Grii

The Ny'ghan Grii (AKA "The Invaders", "The Enemy") are from Henry Kuttner's "The Invaders (fiction)".

Description

At first I got the impression of a globe, oddly flattened at the top and bottom, and covered with what I thought at first was a sparse growth of very long and thick hairs. Then I saw that they were appendages, slender tentacles. On the rugose upper surface of the thing was a great faceted eye, and below this a puckered orifice that corresponded, perhaps, to a mouth.... A squamous, glowing ball covered with squirming, snake-like tentacles — translucent ivory flesh, leprous and hideous — a great faceted eye that held the cold stare of the Midgard Serpent.
— Henry Kuttner's "The Invaders (fiction)"

Ny'ghan Grii are interdimensional, luminous, spherical creatures that float or crawl on tentacles, peering with a single, large, staring eye. They are usually accompanied by icy cold and fog, and lurk near the thresholds to other worlds, seeking the sacrifices that will allow them entry, or drawn across the threshold temporarily by recent disturbances in the space-time fabric.

References

• fiction: Henry Kuttner's "The Invaders (fiction)"
• sourcebook: Malleus Monstrorum