Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn.
In his house in R'lyeh, dead Cthulhu waits dreaming.
Cthulhu is an alien entity in a state that is neither living nor dead, on R'lyeh. He is trapped until "the stars are right". Despite this, his presence on Earth still affects humans, usually through disturbing dreams that the sensitive receive from him. He is said to be vaguely anthropoid, though huge. His skin is rubbery and scaly, and his body is topped by an octopus-like head. He has two large wings growing out his back, and moves with a clumsy, lumbering motion in the depths.
Cthulhu had an extensive cult world wide, up to the 1930s or 1940s. In centuries past, the cult was composed primarily of sailors and other men with strong associations with the seas, mixed with those sensitive enough to receive Cthulhu's dreams.
In Delta Green canon, the Cult of Cthulhu was all but eradicated in the mid 1990s. However, a generation of powerful new worshipers of the alien entity — ”the cream of society, commerce and politics” — would soon be united by its call, and form a new organization.1 Cthulhu also has a great following among the Deep Ones.
- The Bloop, a sound that got popular on the Internet in 1997. It was once amusingly suggested to be Cthulhu rolling over in his sleep, caught on audio. Well explained as the sound of an icequake.