David Zayas, best know as Lt. Angel Batista on Showtime's "Dexter" and as Enrique Morales on "Oz," has joined the cast of Fox‘s Batman prequel series "Gotham". Zayas will play the recurring role of mob boss Salvatore Maroni, a dangerous gangster and a violent rival to the city's biggest crime kingpin Carmine Falcone (John Doman).