Cthulhu is an alien entity created by writer H. P. Lovecraft and first introduced in the short story "The Call of Cthulhu". He is considered a Great Old One within the pantheon of Lovecraftian cosmic entities. While the Great Old Ones are not truly all-powerful gods as the Outer Gods are, they are nonetheless terrifying and godlike in mortal eyes. Cthulhu and his kin arrived on earth billions of years ago, searching for a new home after leaving the green binary star Xoth. However, the planet had already been claimed by a species known as the Elder Things, leading to a war between Cthulhu's Star Spawn and the Elder Things' Shoggoth monstrosities. Eventually, an uneasy peace was reached and the two factions each claimed their own half of the world.