Sheriff

Sheriff was a title usually used by law enforcement officers.

Boss Dogg was a cartoon dog and the sheriff of Zanytown. He was created by the fantasies of a young girl who crashed on the Crooked World. (PROSE: The Crooked World)

The Eleventh Doctor became the sheriff of Mercy after Isaac was killed by Kahler-Tek. (TV: A Town Called Mercy) He later referred to himself as a sheriff when defending the town of Christmas on Trenzalore. (TV: The Time of the Doctor)

The Sheriff of Nottingham tried to seduce Clara Oswald into becoming his consort when he took over the Earth. (TV: Robot of Sherwood)

Bat Masterson was the sheriff of Tombstone, Arizona. In October 1881, he and Wyatt Earp rescued Steven Taylor from the Clantons. He later deputised the First Doctor to talk the Clantons out of fighting. (TV: The Gunfighters)