Leroy Jethro Gibbs[4] (born November 21, 1954) [5] is a fictional character and the original protagonist of the CBS TV series NCIS, portrayed by Mark Harmon in the original series and …

Leroy Jethro Gibbs is a retired Gunnery Sergeant of the US Marine Corps and NCIS Supervisory Special Agent of the D.C. Major Case Response Team which operates out of the Navy Yard in …

Nov 8, 2024 · NCIS agent Jethro Gibbs (Mark Harmon) left the team in season 19; here's why, and what the actor's future looks like on the hit CBS show.

Dec 10, 2025 · The NCIS franchise added a wild new piece of lore to Leroy Jethro Gibbs' expansive story, making a profound and needed alteration to Mark Harmon’s character. …

Dec 10, 2025 · TVLine speaks to the NCIS: Origins showrunners about Gibbs' new relationship status and a surprise cameo in Tuesday's fall finale — read the full Q&A.

May 5, 2025 · At the center of NCIS is a passionate team called the Major Case Response Team, headed by Special Agent in Charge Leroy Jethro Gibbs. Portrayed by Mark Harmon, Gibbs …

Mar 11, 2025 · Gibbs may no longer be a regular character on "NCIS" and its many spin-offs, but his list of rules lives on. They're all worth remembering, but don't worry if you've forgotten a …

Jul 3, 2025 · Played by the legendary Mark Harmon, Gibbs was the backbone of NCIS for nearly two decades. When he left in Season 19, fans around the world collectively gasped.

May 5, 2025 · Leroy Jethro Gibbs (Mark Harmon) lived by his rules on NCIS. For 19 seasons, Gibbs spouted his guidance to his team of special agents, giving them a handbook to live and …

Oct 21, 2024 · Leroy Jethro Gibbs has a set of rules he lives by. For the last 17 years, the "NCIS" writers have been teasing us and releasing a few rules each year. Here's the complete list to …