ARES (AIR-eez; Roman name Mars) was the god of war, or more precisely of warlike frenzy. Though an immortal deity, he was bested by Heracles in battle and was almost killed when stuffed into a jar by two giants. When another hero wounded him during the Trojan War, he received scant sympathy from his father Zeus.
In appearance, Ares was handsome and cruel. He is often depicted carrying a bloodstained spear. His throne on Mount Olympus was said to be covered in human skin.
The Roman god Mars, with whom Ares was identified, was the father of Romulus and Remus, the mythological founders of Rome. Thus he was more important to the Romans than his Greek counterpart. He was also more dignified.