474 (Sleep No More)
From Tardis Wiki, the free Doctor Who reference
A five-year-old Grunt labeled 474 was assigned to a rescue crew in the 38th century.
While on the mission, Osamu Alml-Chopra, another member of the crew, fell under 474's fancy, and she stayed with Chopra even when they became separated from the rest of the crew. Cornered between attacking Sandmen and a fire, 474, knocked out Chopra, seriously injuring 474. She fought off the Sandmen after telling Chopra to go, but was killed in the process. (TV: Sleep No More)