Leroy Jethro Gibbs is a former Gunnery Sergeant in the United States Marine Corps. In the main story, he is an NCIS special agent and is also the current leader of the main NCIS Major Case Response Team. He is mostly called "Gibbs" by colleagues, "boss" by Tony and McGee. He is, in the words of Ducky (Gibbs's oldest and closest friend), a man of more questions than answers.
His characteristics seem careless about anyones’