Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Wilmer Valderrama NCIS Special Agent Nicholas "Nick" Torres Actor Maria Bello NCIS Special Agent Jacqueline "Jack" Sloane Actor Emily Wickersham NCIS Special Agent Eleanor "Ellie" Bishop Actor Brian Dietzen Dr. Jimmy Palmer Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Margo Harshman Delilah Fielding Guest Star Robert Pine Congressman Theodore Randolph Guest Star Emiliano Díez Jefe Guest Star Manuel Uriza Nicolas Rebollo Guest Star Cheryl Texiera Jezebel Poppins Guest Star Andi Chapman Congresswoman Bernice Donaldson Guest Star Sumalee Montano NCIS Special Agent Nicole Taggart Guest Star James Babson Mickey Clark Guest Star Darius De La Cruz El Doctor Guest Star Romeo Fabian Other Rebel Guest Star Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Frank Cardea Executive Producer George Schenck Executive Producer Steven D. Binder Executive Producer, Writer Scott Williams Executive Producer Donald P. Bellisario Executive Producer Tony Wharmby Director