Johnny Ringo makes for one of the most memorable villains in Tombstone, but the real-life Western figure was the hero in another classic Western. Tombstone is filled with real characters from the Old West, most notably Wyatt Earp (Kurt Russell) and Doc Holliday (Val Kilmer). However, many of the villainous Cowboys that the heroes face off with are also based on real people, including Michael Biehn's Ringo. He is the most ruthless and skilled gunfighter among the Cowboys, proving himself to be a real threat to the Earp brothers.