Tanya Ballinger, born June 7, 1973, (also known as Tonya Ballinger from Chico, California) is a model and actress based in the Los Angeles area and best known for her series of Miller Lite Catfight commercials with fellow model Kitana Baker in 2002.
During the convention, Reactor Girl is drawn into a catfight with a walk-on superheroine referred to as "K" (an obvious parody of Supergirl).