A black manta ray-like creature three times the size of a normal human flies toward you. Its body is black changing to gray on its inside or underbelly.
AC 19, touch 9, flat-footed 18 (+1 Dex, +10 natural, -2 size)
A lurker above waits for its prey, clinging to the ceiling, roof, or other such overhang. When prey passes beneath it, the lurker above drops from its hiding place and wraps itself around its prey.
Str 30, Dex 12, Con 19, Int 2, Wis 15, Cha 9
The lurker above is a subterranean carnivore that preys on any living creatures that enter its territory. These creatures are extremely territorial and are never encountered with others of their kind. Mating habits among lurkers is unknown to sages as no two of these creatures have ever been encountered together. A typical lurker above has a hunting territory of several square miles.
Lurker Below: The lurker below is an aquatic variety of lurker above that makes its lair in any body of water and in any climate (though it rarely lairs in extremely cold climates). Lurkers below are pale blue or black in color and are often mistaken for giant manta rays. Lurkers below cannot fly, but have a swim speed of 40 feet. They are otherwise identical to their land-based counterparts detailed above.