Demigod daughter of Ares by Otrera; Amazon of Themiscyra; sister of Hippolyta, Antiope, and Penthesilea per the canonical-Apollodoran sister-roster. Per Justin 2.4 (the canonical-Roman tradition epitomizing Pompeius Trogus), captured by Heracles during the Ninth Labor and ransomed by her sister Hippolyta's surrender of the war-belt of Ares — the Justinian alternative-narrative to the Apollodoran killing-of-Hippolyta variant. Per Apollod. Epit. 1.16, one of three alternative-names (with Antiope and Hippolyta) for the Amazon-consort Theseus carried off; per Apollod. Epit. 5.2, also called Glauce, and treated as alternate-name for Hippolyta in the cross-naming-collapse tradition. Fate after ransom or Theseus-consort-variant uncertain. The canonical-Greek myth-making allowed this variability across the Hippolyta-Antiope-Melanippe-Glauce naming-cluster rather than fixing a single account.