In Greek mythology, Ares (Ancient Greek: Ἄρης [árɛːs], Μodern Greek: Άρης [ˈaris]) is the son of Zeus and Hera. Though often referred to as the Olympian god of warfare, he is more accurately the god of bloodlust, or slaughter personified: "Ares is apparently an ancient abstract noun meaning throng of battle, war."
There are accounts of a son of Ares, Cycnus (Κύκνος) of Macedonia, who was so murderous that he tried to build a temple with the skulls and the bones of travelers. Heracles slaughtered this abominable monstrosity, engendering the wrath of Ares, whom Heracles wounded.
In Greek mythology, Thrax (by his name simply the quintessential Thracian) was regarded as one of the reputed sons of Ares. In the Alcestis, Euripides mentions that one of the names of Ares himself was Thrax since he was regarded as the patron of Thrace (his golden or gilded shield was kept in his temple at Bistonia in Thrace).[6
Thracians were regarded as warlike, ferocious, and bloodthirsty.
Thracians were seen as "barbarians" by other peoples, namely the ancient Greeks and Romans.
Herodotus writes that "they sell their children and let their wives commerce with whatever men they please"
One notable cult that is attested from Thrace to Moesia and Scythia Minor is that of the "Thracian horseman", also known as the "Thracian Heros", at Odessos (Varna) attested by a Thracian name as Heros Karabazmos, a god of the underworld usually depicted on funeral statues as a horseman slaying a beast with a spear.