Tuvok is a fictional character in the Star Trek media franchise and a main character in the television series Star Trek: Voyager. Tuvok is a Vulcan who serves as the ship's second officer, Chief of Security, and Chief Tactical Officer. He was portrayed by Tim Russ throughout the show's run from 1995 to 2001, as well as in subsequent portrayals. Tuvok's backstory is told during the first episode of Voyager, where he worked as an undercover Federation agent aboard a Maquis ship, the Val Jean, led by Chakotay. The starship Voyager, under the command of Captain Kathryn Janeway, is sent to extract Tuvok, but the mission is interrupted as both ships are catapulted across the galaxy by a mysterious force. Janeway leads both crews on a return trip home for seven years in uncharted space, creating the basic setting of the series. Source: Wikipedia (en)