Leta is a goddess Oneroi. She is sister to M'Adoc. Her first husband was a human who was killed by Dolor when Zeus ordered all the human mates and half-human children of the Dream-Hunters to be slaughtered and the Dream-Hunters themselves to be rounded up and punished for a crime they didn't commit. Unbeknownst to her, Cratus spared her baby Delphine's life, smuggling her out to be adopted by peasants.
Leta spent her whole life on Olympus In stasis to heal from her bloody battle with Dolor until her old enemy Dolor escaped imprisonment and went after her. Since Dream-Hunters derive strength from human emotion, Leta descended to the human realm to siphon the intense anger of actor Aidan O'Conner. The two fell in love with each other and defeated Dolor.