Kimberly Guilfoyle is a character who made her debut in Harley Quinn: A Very Problematic Valentine's Day Special. She is Darkseid's stone faced girlfriend. Throughout the episode, various super couples gave testimonials about their romances: Superman and Lois Lane, Hawkman and Hawkgirl, Killer Croc and Enchantress, Aquaman and Mera, Darkseid and Kimberly Guilfoyle. The episode concludes with Harley and Ivy's interview, and they wish the viewers a Happy Valentine's Day.