Flash Gordon (Lou Richards) is the legendary space hero who has thwarted the evil plans of dictator Ming the Merciless (William Callaway, then Ron Feinberg) for years. His teenage son, Richard “Rick” Gordon (Loren Lester), is headstrong, impulsive and a computer genius. Ming’s children, Prince Kro-Tan (Hal Rayle) and Princess Castra, sometimes aid the emperor.