Deimos (in Greek Δείμος) is the God of Terror and the son of Ares and Aphrodite.
Deimos was the god (daemon) of terror and panic, and his twin-brother Phobos (Phobus) of fear, flight and battlefield rout. They were sons of the god Ares, who accompanied their father into battle, driving his chariot and spreading fear in their wake. As sons of Aphrodite, goddess of love, the twins represented fear of loss.
Deimos has the ability to bring terror to a large crowd. In The Stolen Chariot, he brings a large sea monster that scares many mortals.