Introduction
Deimos, "dread" or "terror", is the personification of the paralysing dread that accompanies fear in battle, a son of Ares and Aphrodite, twin brother of Phobos, with whom he escorts their father Ares onto the battlefield.
Family
Role
Like his brother Phobos, Deimos is a personification rather than a figure with independent adventures, embodying the terror of warfare itself; the two brothers appear together consistently in the sources that mention them, generally yoking Ares's chariot or accompanying him as he enters or leaves a battle.
Legacy
Deimos, together with Phobos, gives his name to the second of the two small moons of Mars, discovered in 1877 and named for the god of war's attendant spirits, a naming convention that reflects the long afterlife of these ancient personifications in modern scientific nomenclature.