Powerful ancient beings, who lie half-dead, neither awake nor sleeping, in various temples and ancient cities. Should they ever be fully woken, it is said that the world will ring with their cry
"You damn kids [all living things]!
Get off my lawn [the universe]!"
The accursed book Azaf contains the phrase
Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn
"In his house at R'lyeh, dead Cthulhu is trying to get some damn sleep for once."
Azaf says that the Grumpy Old Ones are guarded by the Mi-Go-Reng, or Spicy, Delicious Doom.