Leroy Jethro Gibbs
Supervisory Special AgentLeroy Jethro Gibbs, portrayed by Mark Harmon, was born in Stillwater, Pennsylvania to Jackson Gibbs and an unnamed mother. He joined the United States Marine Corps in 1976 and became a Scout Sniper instead of attending college. After serving tours of duty in Panama and Iraq, he retired from the Marine Corps with the rank of Gunnery Sergeant. He joined NIS, which later became NCIS, after his wife Shannon and only daughter Kelly were murdered in
1991. Gibbs later travelled to Mexico and murdered the drug dealer responsible, a crime he kept concealed for twenty years. Since then, he has been married and
divorced three times, and is currently single. He currently leads a team consisting of Anthony DiNozzo, Timothy McGee, Abigail Sciuto, and Ziva David. In the episode "Bête Noire" Gibbs comes face to face with terrorist Ari Haswari and puts a bullet through Ari's right shoulder. Finding Ari later becomes an obsession for Gibbs when he and DiNozzo witness original team member Agent Kate Todd get shot dead in front of them in the season 2 finale, "Twilight". He is often shown in his basement building boats, at least one of which he named after his daughter; another was named after one of his ex-wives. In the episode "Blowback", when confronting "Goliath" on the plane about "ARES", Gibbs revealed he is aVirgo. He is a deadshot marksman, as evidenced in "Hiatus" with flashbacks of him hitting a long-distance headshot of his family's murderer, who was driving a moving vehicle, a 1200-yard killshot, from a file read by Director Leon Vance in the episode "Deliverance"; And in "Jeopardy" he hits a kidnapper with a very swift killshot in the forehead---he takes this shot while kneeling from inside a car trunk, with his left hand.
Gibbs is one of three characters to have appeared in every episode.