Descendants of human colonists who built a society modelled on medieval fantasy, ruled by Queen Paolana, whose son Andy Billups left the throne behind to become chief engineer of the USS Cerritos.
The Hysperians are humans whose ancestors settled the planet Hysperia and adopted the trappings of a Renaissance fair. They speak in mock-archaic style, call their technology magic and fly ships with names such as the Monaveen, yet their engineering is perfectly modern underneath.
They appear in the Lower Decks episode Where Pleasant Fountains Lie. Lieutenant Commander Billups is the crown prince, and by Hysperian law he must take the throne if he ever loses his virginity. His mother, Queen Paolana, has tried repeatedly to trick him into it.
In 2381 she stages her own death in an engine accident so that Billups will accept his duty. Sam Rutherford uncovers the deception just in time, and Billups returns to engineering.