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 Maya Stojan Meredith Ragen Guest Star Greg Sereno Jalen Washington Guest Star Henderson Wade Sam Harper Guest Star Tim Conlon Jerry Grossman Guest Star Brett Rice Capt. RJ Hammond Guest Star Aaron Hendry Bob Mugford Guest Star Keston John Mark Dominquez Guest Star John DeMita Navy Adm. Jorge Morales Guest Star Dahlia Salem Maria De La Rosa Guest Star Matthew Brenher Mattias Groller Guest Star David Paladino Navy Senior Chief Petty Officer Diego De La Rosa Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Frank Cardea Executive Producer George Schenck Executive Producer Steven D. Binder Executive Producer Scott Williams Executive Producer Donald P. Bellisario Executive Producer Brendan Fehily Writer Thomas J. Wright Director