In Turkic mythology, Erlik was the deity of evil, darkness, lord of the lower world, and judge of the dead. Surely, he is known as the first of mankind created by Ulgen. However he wants to become equal with Ulgen and had been in a position degraded to below Ulgen. Then he wanted to make his own land and was sent to the prison at the 9th layer of the earth and became opposed to the upper world, the realm of light.
The evil spirits created by Erlik cause misfortune, sickness, and death to mankind. These spirits are imagined as Erlik’s assistants. Besides these, his 9 sons and daughters help their father in the way of evil. Erlik’s daughters especially try to change shaman’s mind while he is attempting to reach Ulgen with their beauties. Erlik gives all kinds of sickness and wants sacrifices from the people. If they do not sacrifice to him, he catches the dead bodies of the people that he killed and takes them away to this lower world and then makes them his slaves. So, especially in Altays, when sickness appears, people become scared of Erlik and sacrifice him a lot of animals.
In the prayers of shamans, Erlik is defined as a monster. In addition, he is an old man with a well-built body. He has eyes, eyebrows, and a moustache that are black. His face and teeth are like pigs'.