Perseus and the Graeae
Enyo was one of the Graeae in Greek mythology. Her two sisters were Deino and Pemphredo. The three of them were daughters of Phorcys and Ceto. They were usually depicted as old women and share one eye and one tooth. Along with Geras, they were personifications of old age. However, unlike the Graea, Geras was male. Enyo herself was the personification of horror.