Illoria Daze, a gill-singer of Hetzalian origin, originated on the planet Hetzal Prime situated within the Outer Rim. Her special ability was to create melodies in a six-part harmony by vibrating her vocal cords. Although her beginnings were humble, she ultimately achieved widespread recognition throughout the Galactic Republic during the High Republic Era, becoming celebrated for her distinctive charm and remarkable rise from poverty to wealth. Daze ultimately departed from Hetzal Prime, choosing to reside among affluent residents on Alderaan, a Core Worlds planet. In 232 BBY, Merven Getter, a scantech expert from the Hetzal system, regarded Daze as the most significant accomplishment of the Hetzal system when evaluating the numerous attributes of his system.
Within Light of the Jedi, a novel from 2021 penned by Charles Soule as a component of Phase I of the Star Wars: The High Republic project spanning multiple media formats, Illoria Daze received a mention. Before the book's publication, StarWars.com released a sneak peek on November 12, 2020, which incorporated her name.