Ares God of war, spring, growth in nature, agriculture, terror, anger, revenge, courage and fertility. Protector of cattle. The son of Jupiter and Juno, he was the god of war. Mars was regarded as the father of the Roman people because he was the father of Romulus, the legendary founder of Rome, and husband to Bellona. He was the most prominent of the military gods that were worshipped by the Roman legions.