FOX's "Gotham" prequel has had some major promotion in recent months with many photos -- both official and unofficial -- dropping to highlight the show's core cast. According to EW.com, at least one more name will get added to the cast as a guest star: Cory Michael Smith has been cast as "Gotham's" Edward Nygma, the man destined to become Batman's arch-nemesis The Riddler. Although Smith is currently listed as a guest star, EW reports that there is an option for him to get upgraded to a series regular.

Smith will join regular cast members Ben McKenzie (Detective James Gordon), Donal Logue (Detective Harvey Bullock), Jada Pinkett Smith (Fish Mooney), Sean Pertwee (Alfred Pennyworth), Robin Lord Taylor (Oswald Cobblepot), Camren Bicondova (Selina Kyle) and David Mazouz (Bruce Wayne). The pilot, written by "The Mentalist" creator Bruno Heller, currently has a series commitment at FOX.