Seb-Natan
Seb-Natan, also known as the Foreteller, was a character in the story of Ganmadan, or the "Day of Annihilation". Described as a khalagu ("demon"), she was the twin sister of Seb-Cheneb. 

Seb-Natan played a drum made from the skin of children. She played it "so hard and so long" with a chain of skulls that her heart burst.

After the death of her sister, Seb-Cheneb blew the horn of the hellbeast , summoning the ch'khalagu ("very bad demons") who would bring about the Thousand Days of Pain, in which worlds were burn and lives were lost. ()
Mythological figures