Lieutenant Seth Lerner was a Human male in the 23rd century. He was assigned to the USS Forge, and later the USS Enterprise's security department. On Stardate 7004.1, Lerner joined James T. Kirk's landing party to the Paragon Colony. He later aided James T. Kirk in defending the colony from Klingon attack. (TOS novel: The Rise and Fall of Khan Noonien Singh, Volume 1)