Superboy was the featured series in "Adventure Comics" in the 1950s. In "Adventure Comics" #247 (April 1958) by writer Otto Binder and artist Al Plastino, Superboy met three teenagers from the 30th century: Lightning Boy, Saturn Girl, and Cosmic Boy, who were members of a "super-hero club" called the Legion of Super-Heroes. Their club had been formed with Superboy as an inspiration, and they had time travelled to recruit Superboy as a member. After a series of tests, Superboy was awarded membership and returned to his own time.