Mary Mouser – Kelly Gibbs
Mary Mouser, a child performer, had the kind of early-career that most actors wish for! She appeared in Scrubs, Monk, King of Queens, CSI, and One Life to Live as a child and a teen. On NCIS, she played Kelly Gibbs, the daughter of the main character Gibbs, in a recurring role. She’s gotten some meaty roles in shows like Body of Proof, Frenemies, Netflix’s Cobra Kai, and Mind Field now that she’s all grown up.
Pancho Demmings – Gerald Jackson
Actor Pancho Demmings was a part of the original cast list from season one, and he played Gerald Jackson on the show regularly before leaving abruptly. He played Ducky’s assistant medical examiner before being shot and injured by a villain, and then simply vanished. Pancho did not go on the record to explain why he left the show, but he did land better roles on shows like CSI, Bones, 24, and General Hospital.