An alternate identity of Lois Lane, who comes to Earth from Krypton in February 1964 to become the mighty superhero Krypton Girl. Legion of Super-Heroes members Saturn Girl and Sun Boy send Night Girl to help Lois Lane conceal her secret identity from Clark Kent (SGLL No. 47/3, Feb 1964: "The Super-Life of Lois Lane!").
(see: Imaginary Stories)