Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Cote de Pablo NCIS Special Agent Ziva David Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Brian Dietzen Dr. Jimmy Palmer Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Rene Auberjonois Dr. Felix Blackwell Guest Star Michael Des Barres Del Finney Guest Star Amanda Walsh Ellen Roberts Guest Star Shelley Robertson Navy Capt. Beverly Sharp Guest Star Jim Hoffmaster Administrator Guest Star Donald P. Bellisario Executive Producer Steven D. Binder Writer Terrence O'Hara Director