Universo is a supervillain appearing in DC Comics, primarily as an enemy of the Legion of Super-Heroes. He was created by Jim Shooter and Curt Swan, and first appeared in Adventure Comics #349.

Saturn Girl is a superheroine appearing in comics published by DC Comics. A talented telepath from the 30th century, Saturn Girl is a founding member of the Legion of Super-Heroes. Imra's "Saturn Girl" title refers to her homeworld of Titan, Saturn's largest moon. There have been three versions of Imra since her original debut, separated by the events of the limited series Zero Hour: Crisis in Time! and Infinite Crisis.