In Greek mythology

Greek mythology

Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...

, Deimos was the personification of terror.

He was the son of Ares

Ares

Ares is the Greek god of war. He is one of the Twelve Olympians, and the son of Zeus and Hera. In Greek literature, he often represents the physical or violent aspect of war, in contrast to the armored Athena, whose functions as a goddess of intelligence include military strategy and...

 and Aphrodite

Aphrodite

Aphrodite is the Greek goddess of love, beauty, pleasure, and procreation.Her Roman equivalent is the goddess .Historically, her cult in Greece was imported from, or influenced by, the cult of Astarte in Phoenicia....

. He is the twin brother of Phobos

Phobos (mythology)

Phobos is the personification of horror in Greek mythology. He is the offspring of Ares and Aphrodite. He was known for accompanying Ares into battle along with his brother, Deimos, the goddess Enyo, and his father’s attendants. Timor is his Roman equivalent...

 and the goddess

Goddess

A goddess is a female deity. In some cultures goddesses are associated with Earth, motherhood, love, and the household. In other cultures, goddesses also rule over war, death, and destruction as well as healing....

 Enyo

Enyo

Enyo , was an ancient goddess of war, acting as a counterpart and companion to the war god Ares. She is also identified as his sister, and daughter of Zeus and Hera, in a role closely resembling that of Eris; with Homer representing the two as the same goddess...

 who accompanied Ares into battle, as well as his father's attendants, Trembling, Fear, Dread, and Panic. Deimos is more of a personification and an abstraction of the sheer terror that is brought by war and he never appeared as an actual character in any story in Greek Mythology

Greek mythology

Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...

. His Roman

Roman mythology

Roman mythology is the body of traditional stories pertaining to ancient Rome's legendary origins and religious system, as represented in the literature and visual arts of the Romans...

 equivalent was Formido or Metus.

Asaph Hall

Asaph Hall

Asaph Hall III was an American astronomer who is most famous for having discovered the moons of Mars in 1877...

, who discovered the moons of Mars

Mars

Mars is the fourth planet from the Sun in the Solar System. The planet is named after the Roman god of war, Mars. It is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance...

, named one Deimos

Deimos (moon)

Deimos is the smaller and outer of Mars's two moons . It is named after Deimos, a figure representing dread in Greek Mythology. Its systematic designation is '.-Discovery:Deimos was discovered by Asaph Hall, Sr...

, and the other Phobos

Phobos (moon)

Phobos is the larger and closer of the two natural satellites of Mars. Both moons were discovered in 1877. With a mean radius of , Phobos is 7.24 times as massive as Deimos...

.

On the modern monument

Monument

A monument is a type of structure either explicitly created to commemorate a person or important event or which has become important to a social group as a part of their remembrance of historic times or cultural heritage, or simply as an example of historic architecture...

 to the battle

Battle of Thermopylae

The Battle of Thermopylae was fought between an alliance of Greek city-states, led by King Leonidas of Sparta, and the Persian Empire of Xerxes I over the course of three days, during the second Persian invasion of Greece. It took place simultaneously with the naval battle at Artemisium, in August...

 of Thermopylae

Thermopylae

Thermopylae is a location in Greece where a narrow coastal passage existed in antiquity. It derives its name from its hot sulphur springs. "Hot gates" is also "the place of hot springs and cavernous entrances to Hades"....

, Leonidas's shield has a representation of Deimos.

In the God of War

God of War (series)

God of War is a series of action-adventure video games based on Greek mythology.The main trilogy—God of War I, II, & III—in the series were developed by Sony Computer Entertainment's Santa Monica division , with Ready at Dawn Studios developing the PSP and Javaground the mobile phone installment...

video game series, Deimos is the name of the brother of the series protagonist Kratos

Kratos (God of War)

Kratos is a video game character from Sony Computer Entertainment'sGod of War series, which is loosely based on Greek mythology. Kratos first appeared in the highly successful video game God of War , which led to the development of five additional games featuring the character as the protagonist...

. This is not the same Deimos in Greek mythology, however,in this series he is the son of Zeus

Zeus

In the ancient Greek religion, Zeus was the "Father of Gods and men" who ruled the Olympians of Mount Olympus as a father ruled the family. He was the god of sky and thunder in Greek mythology. His Roman counterpart is Jupiter and his Etruscan counterpart is Tinia.Zeus was the child of Cronus...

 and Callisto. He and his brothers helped carry Ares

Ares

Ares is the Greek god of war. He is one of the Twelve Olympians, and the son of Zeus and Hera. In Greek literature, he often represents the physical or violent aspect of war, in contrast to the armored Athena, whose functions as a goddess of intelligence include military strategy and...

off the battlefield during the Trojan War when he was injured.