Shuffling towards him in the darkness was the gigantic, blasphemous form of a thing not wholly ape and not wholly insect. Its hide hung loosely upon its frame, and its rugose, dead-eyed rudiment of a head swayed drunkenly from side to side. Its forepaws were extended, with talons spread wide, and its whole body was taut with murderous malignity despite its utter lack of facial description.
– H.P. Lovecraft and Hazal Heald, “The Horror in the Museum”
Little is known about these things save their name and a description of a hide. It is assumed that they are entities capable of walking between the planes and worlds of the universe, spending little time at one planet, but wandering about. They occasionally serve an Outer God or a Great Old One. They can leave a plane at will, sinalling the change by beginning to shimmer and fade.
A shambler can take objects or beings with it when it fades into another dimension. By clutching the desired object in its talons. Objects and victims lost are never found again.
First encountered during the events of Case 005 – Eyes for the Blind.