Machlyes

The Machlyes (Μάχλυες) were a legendary ancient Libyan tribe.

Ancient sources
According to Herodotus, their young women held a ritual battle with sticks and stones annually with neighboring Auseans (Αὐσέες). Those who died of their wounds were said to have lied about their virginity.

Pliny the Elder claimed they were hermaphrodites that had a male half and a female half, possibly inspired by the martial practices of the females.

In fiction
In the book Sweet Shadows by Tera Lynn Childs, the machlyes Achilla saves Gretchen from the merdaemon in the abysses.