Melinoë
Little represented in extant ancient texts, Melinoë is the daughter of Persephone and Zeus, the sister of Zagreus. The hymn to Melinoë found among the Orphic Hymns, number 71, invokes her as a powerful chthonic nymph, not a goddess, belonging to the company of Hecate, Selene, Artemis, and Persephone. While no mythological narratives provide details of her existence, the twelve-line hymnic text considers that Melinoë has the power to drive away frenzy from one's soul and smile benignly upon, presumably with good effect, upon those who worship her.
The character of Melinoë developed within the video game Hades II by Supergiant Games is crafted almost entirely from other mythological figures from classical and Orphic literature.
Bibliography:
Morand, Anne-France. 2001. Études sur les Hymnes Orphiques. Religions in the Greco-Roman World, 143. Leiden, Boston, and Köln: Brill.
RE suppl. 15, s.v. "Melinoe", coll. 133-36 [H. Bannert (1978)].
Harrauer, C. 1987. Meliouchos. Studien zur Entwicklung religiöser Verstellungen in griechischen Zaubertexten. Vienna.
Athanassakis, Apostolos N. and B.M. Wolkow. 2013. The Orphic Hymns; translation, introduction, and notes. Baltimore: Johns Hopkins University Press.