Fan Casting Night Girl in Return to the DC Universe

Born on sunless Kathoon, Lydda Jath gained incredible super strength from her scientist father when she aspired to want to join the Legion of Super-Heroes and get closer to her crush Cosmic Boy, which gave Lydda incredible strength under darkness. Initially rejected, Lydda, calling herself Night Girl, would go onto found the Legion of Substitute Heroes, where she would hone her powers and eventually, like fellow founder Polar Boy, join the Legion, where she began a relationship with Cosmic Boy.