Talosian

Talosians are an ancient race of humanoids native to planet Talos IV. They have the amazing ability to create extremely realistic illusions. The Talosian society was very technologically advanced until a nuclear holocaust destroyed most of their civilization. The surviving Talosians went to the underground and became more and more "addicted" and psychologically dependant on the illusions they created, eventually losing their ability to deal with technology. Overall they are a wise and benevolent race.