Mary Sue

Lt. Mary Sue was a Starfleet officer who served on the USS Enterprise when she was only "fifteen and a half years." Kirk found her exceptionally attractive and Spock admired her mind. She managed to almost single-hanedly save the ship from "jumping cold robbies" and consequently was honored with the Nobel Peace Prize, the Vulcan Order of Gallantry and the Tralfamadorian Order of Good Guyhood. However, she eventually died and her birthday became a "national holiday" of the Enterprise.