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 Marco Sanchez Alejandro Rivera Guest Star Billy Dee Williams Leroy Jethro Moore Guest Star Clare Carey Ann Gibbs Guest Star Stephen Monroe Taylor Wayne "The Snail" Levinson Guest Star Kim Rhodes CIA Officer Sandra Jenkins Guest Star Fernanda Andrade Leticia Gomez Guest Star Ellen Wroe Navy Petty Officer Violet L. 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 Gina Lucita Monreal Writer Tony Wharmby Director