Biston was a demigod and a son of Ares. He had two brothers: Odomas and Edonus.
Biston was the son of Ares and a mortal woman named Calliope. He built the city of Bistonia on the shores of Lake Bistonis in Thrace. He also introduced the Thracian practice of tattooing both men and women with eye-like patterns as a magical fetish, in response to an oracle which guaranteed victory against the neighbouring Edonians tribe if so adorned. The Thracian Bistonians were famous for their warlike nature and cult of Ares whom they worshipped in the form of an upright standing sword.