Cthulhu is one of the Great Old Ones, a group of powerful beings from another place that now inhabit Earth, waiting to rise up(when the stars are right) and destroy the human race so they can rule the planet. The Old Ones are neither good nor evil, meaning that they do not hate humans, they just do not care about them. They think of humans as if they could be ants. Also, their appearance is so unlike anything of this world, that it is said that any human who so much as gazes upon one of them will go insane.