Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Brian Dietzen Dr. Jimmy Palmer Actor Emily Wickersham Probationary NCIS Agent Eleanor "Ellie" Bishop Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Marisol Nichols ATF Special Agent Zoe Keates Guest Star Matt L. Jones NCIS Special Agent Ned Dorneget Guest Star Jamie Bamber NSA Attorney Jake Malloy Guest Star Johann Urb U.S. Park Police Sgt. Burt Moore Guest Star Ethan Rains NCIS Systems Administrator Kevin Hussein Guest Star Robert Wagner Anthony DiNozzo Sr. Guest Star Melinda McGraw Diane Sterling Guest Star Joe Spano Senior FBI Agent T.C. Fornell Guest Star Alex Veadov International Mercenary Sergei Mishnev Guest Star Lev Gorn Russian Counselor Anton Pavlenko Guest Star Lindsey Kraft Sarah Goode Guest Star Daniel Zolghadri Luke Harris Guest Star Gary Glasberg Executive Producer, Writer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Shane Brennan Executive Producer Donald P. Bellisario Executive Producer George Schenck Writer Gina Lucita Monreal Writer Christopher J. Waild Writer Steven D. Binder Writer Jennifer Corbett Writer Scott Williams Writer Terrence O'Hara Director Frank Cardea Writer Arvin Brown Director Thomas J. Wright Director Tony Wharmby Director Dennis Smith Director James Whitmore Jr. Director