Abigail Sciuto		He was Dr. Mallard's original assistant until being incapacitated by Ari Haswari after being held hostage in the morgue
Dr. Donald Mallard		He became Mallard's medical assistant both in the field and in the morgue.
Caitlin Todd		He is a former homicide detective for the Baltimore Police Department.
Anthony DiNozzo		She was Forensic Specialist, NCIS. Known for her gothic style of dress and addiction to the fictional, high-caffeine beverage "Caf-Pow".
Jimmy Palmer		He is a British (Scottish)-bornchief medical examiner, who has been long-time friends with Gibbs.
Ziva David		She was sent to NCIS following the murder of Special Agent Caitlin Todd by a rogue Mossad operative named Ari Haswari.
Leon Vance		He joined NIS, which later became NCIS, after his wife Shannon and only daughter Kelly were murdered.
Leroy Jethro Gibbs		He was promoted to Field Agent and assigned to Agent Gibbs' team.
Gerald Jackson		She was a former Secret Service Special Agent, she was hand picked to protect the President.
Jenny Shepard		She was Gibbs' former partner and also his former lover.
Timothy McGee		He signed up to join the Marines but never served due to having undergone surgery to repair a displaced retina that he suffered during his boxing career.