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: Earth One using his heat vision, will block the sun's energy, which powers Superman, and that if Parasite breaches the suit and absorbs his power again, he will die. Parasite again attacks the Daily Planet and Superman intervenes. With the warsuit, Superman can fight Parasite on equal terms, but the suit gradually disintegrates as the battle continues. Theresa arrives and Parasite breaks away from the fight to hug her, accidentally absorbing her energy and killing her. Parasite blames Superman for her death and resumes his attack. Superman strikes Parasite with his full strength, incapacitating him. Parasite is taken into the custody of