The Gargareans were a tribe of all men.
The Gargareans lived near the Amazons, and had sex with the Amazons annually in order to keep both tribes reproductive. They were occasionally kidnapped and murdered for this purpose. The Amazons kept the female children, raising them as warriors, and gave the males to the Gargareans. The Amazons were always more populated as the Amazons sometimes left the male children to the elements, some were rescued, some managed to survive, being raised by the animals who came across them, and a few died.
When Antianeira became queen of the Amazons after the fall of Penthesilea in the Trojan War, she brought suffering among the Gargareans. They rebelled after Antianeira killed Donos, son of the leader, Leriphon.