Anthony DiNozzo

Anthony D. "Tony" DiNozzo Jr./dɪˈnoʊzoʊ/ is a fictional character and protagonist from the CBS TV series NCIS portrayed by American actor Michael Weatherly. An original character created by producer Donald P. Bellisario, he is one of three characters to appear in every episode of the series, the others being Special Agent Leroy Jethro Gibbs and Abby Sciuto. He has made a guest appearance in the spin-off NCIS: New Orleans to aid the New Orleans field office when a Navy officer on a port visit is found dead from bubonic plague and has also appeared in the spin-off, NCIS: Los Angeles, guest-starring in the Season 7 episode, "Blame It on Rio" where he was transferring a prisoner, who escaped, and needed the Office of Special Projects to help him.

Tony is scripted as the senior field agent of the fictional Major Case Response Team (MCRT) led by Gibbs. A former police detective, he is athletic and charismatic—at least, when not being snarky/smarmy—he describes himself as a former jock, and often leads crime scene investigations; when not at work he is a movie buff. Over the course of the show, he carries a few storylines, namely an undercover assignment that carries through Season 4 and into Season 5. In general overview, he is renowned for providing comic relief for an otherwise serious drama show, regularly spouting movie trivia, and, especially in the early seasons, being a womanizer who fears commitment. His relationship with Cote de Pablo's character, Mossad officer turned NCIS agent Ziva David, who is introduced in the third season, later becomes fundamental to his subtle shift in attitude.