Lovecraft wrote horror fiction but never achieved fame in his lifetime. He was a short-story writer, essayist, poet and novelist. He is considered the most important and influential century writer in his genre of science and horror fiction.
Cthulhu is a malevolent entity who hibernates somewhere beneath the ocean in the South Pacific. The imprisoned Cthulhu is the source of constant anxiety for mankind at a subconscious level, and also the subject of worship by a number of human religions.