Lyle Norg was a a genius and prodigy in biochemistry. He created a serum that allowed him to turn invisible, and earned a place in the Legion of Super-Heroes as one of its earliest members shortly after Colossal Boy and Chameleon Boy. A dedicated member, Lyle often engaged in regular exercise and combat training to make his contributions to the Legion greater. Though he often served covertly in the background, Lyle's peers recognized his accomplishments and he was eventually elected the Legion's fourth leader in the team's fifth term. Lyle Norg was created by Jerry Siegel and Jim Mooney. Lyle was the first election where the readers were able to vote for Legion leader and Lyle's success is largely attributed to the readership wanting to see him get more to do.