Lieutenant Painter 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 the historic five-year mission. He was one of the ship's helmsmen.
Like the rest of the Enterprise crew, Painter later fell under the influence of the Omicron spores and mutinied, though he eventually recovered thanks to a subsonic transmitter. (TOS: "This Side of Paradise")