The Adventures of Superman (radio) home planet of Krypton is located on the far side of the sun, as opposed to a distant star system as it is in most stories. During the journey to Earth, baby Kal-el grows into an adult and emerges fully grown from his ship after it lands on Earth. He is never adopted by the Kents but immediately begins his superhero career. This was eventually retconned in later episodes to match the narrative of the comic books. This serial introduced the fictional mineral kryptonite, the radiation from which can weaken and even (in some continuities) kill Superman. Aside from giving
Superman Revenge Squad calls himself a "One-Man Superman Revenge Squad." A group of villains including Gizmo, Magenta, Girder, the Thinker, and Cyborgirl were known as the Cyborg Revenge Squad. Superman Revenge Squad The Superman Revenge Squad is the name of two fictional organizations in the DC Comics universe. As their name suggests, they are enemies of Superman. In Pre-"Crisis" continuity, the Squad originated as the Superboy Revenge Squad, debuting in "Superboy" #94 (January 1962); the Superman Revenge Squad subsequently appeared in "Action Comics" #286 (March 1962). Both Squads are composed of aliens from the planet Wexr II, whom Superboy had prevented from achieving