In Greek mythology, the Keres were malevolent spirits who brought pestilence and ruin. They feasted on dead and dying warriors. The Keres were daughters of Nyx, and as such the sisters of beings such as Moirai, who controlled the fate of souls, and Thanatos, the god of death. Some later authorities, such as Cicero, called them by a Latin name, Tenebrae, and named them daughters of Erebus and Nyx.