Seth Harper was a gunslinger recruited by the Clanton brothers of Tombstone, Arizona, when they plotted to kill Doc Holliday - in revenge for his killing of another of their siblings. On visiting Holliday's new dentist shop, Harper mistook the Doctor for the infamous gunman - pretending to befriend him so that he would walk into a trap at the Last Chance Saloon.
Harper was later gunned down in the saloon by Johnny Ringo, who had just come to Tombstone and who was also out to shoot down Holliday.
Played by: Shane Rimmer. Appearances: The Gunfighters (1966).
- Canadian actor Rimmer was best known for his collaborations with Gerry Anderson - most notably providing the voice of Scott Tracey in Thunderbirds. He also voiced characters in Captain Scarlet, Joe 90 and appeared in UFO and Space:1999. Rimmer featured four James Bond movies - the most significant role being the commander of the US submarine in The Spy Who Loved Me. He also featured in the first three of the Christopher Reeve Superman films.