Dr. Donald "Ducky" Mallard
Portrayed da David McCallum. Chief Medical Examiner, NCIS. Dr. Donald "Ducky" Mallard, M.D., M.E. is a British (Scottish)-born[citation needed] chief medical examiner, who has been long-time Friends with Gibbs. He has a "second talent", as Gibbs calls it, to be able to read people, which he expands in Season 4 da studying to be a psychologist. In cases without actual bodies, he assists da lending his mind to decipher the clues left da the perpetrators. He can be a bit eccentric, as he often talks to the deceased and rambles to the living with many long personal remembrances...