Nyx, goddess of night - A shadowy figure, Nyx stood at or near the beginning of creation, and was the mother of other personified deities such as Hypnos (Sleep) and Thanatos (Death). Her appearances are sparse in surviving mythology, but reveal her as a figure of such exceptional power and beauty, that she is feared by Zeus himself. She is found in the shadows of the world and only ever seen in glimpses.
STYX [Στυξ] was the goddess of the underworld River Styx, one of the Titan generation of Okeanides. Styx was also the personified Daimon of hatred. Described as a daughter of Oceanus and Tethys and as a nymph, Styx dwelt at the entrance of Hades, in a lofty grotto which was supported by silver columns. She was a firm ally of Zeus in the Titan Wars, who brought her children Nike, Zelos, Bia and Kratos to stand alongside the god. Zeus rewarded her by making her streams the agent of the binding
Persephone was born to Demeter, the Goddess of harvest and was said to have been abducted by Hades who rules the Underworld. In her mother’s grief over her daughter being promised to Hades by Zeus, king of gods Demeter mourned and devised a punishment where all the crops became stillborn and the soil barren. Moved by this, Zeus ordered Hermes to escort Persephone back to her mother.
In greek mythology, Asteria ( Ἀστερία, “of the stars, starry one”) was the Titan goddess of the oracles and prophecies of night, (including prophetic dreams, and necromancy), and falling stars. She was daughter of the Titans Coeus and Phoebe and mother of Hecate, goddess of magic. After the fall of the Titans, Asteria was pursued by the god Zeus. She fled his advances, transforming herself into a quail and leaping into the sea where she became the island of Delos.
(Technically Thatcher is the "prince of death" sense Alex is "adopting" him and they're is going to act like be a older brother/parent and when Alex retires/passes down the job of Head Grim Reaper then Thatcher will be the "king of death". And Amber is the "princess of Life" and if she ever takes Michael's position then she'll be the "queen of life" since Michael has a hand in helping create life with God)