ARES was the great Olympian god of war, battlelust, civil order and manly courage. In Greek art he was depicted as either a mature, bearded warrior dressed in battle arms, or a nude beardless youth with helm and spear. Because of his lack of distinctive attributes he is often difficult to identify in classical art.
Viking painting. Viking berserks are described as terrible in the Icelandic old Sagas. They are supposed to have trembled, clapping their teeth and howling. When attacking they would bite their shields, feeling no fear or pain, the only thing in their mind was to destroy the enemy.