Lieutenant Latimer was a male Human Starfleet officer in the 23rd century. He served in the command division aboard the USS Enterprise in 2267 under the command of Captain James T. Kirk, during an historic five-year mission that the starship undertook. He was one of the ship's navigators.
That same year, Latimer was the pilot of the shuttlecraft Galileo while it was collecting data on the Murasaki Effect. He was the first of two officers killed by the inhabitants of the planet Taurus II, following the shuttle's crash there. (TOS: "The Galileo Seven")