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 Keith Carradine Mannheim Gold Guest Star Joel Brooks Ronnie Mustard Guest Star Hank Harris Denny Johnson, Nerdy Man Guest Star John Sloan Luke Pischedda Guest Star David Shatraw Bobby Quinn Guest Star Javi Mulero Earl Grieve Guest Star Linc Hand Navy Petty Officer 1st Class Damien Hunter Guest Star Sue Cremin Vivian Sutton Guest Star Justin Alston NCIS Special Agent Holgate Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Shane Brennan Executive Producer Donald P. Bellisario Executive Producer Steven D. Binder Writer Arvin Brown Director