Klingons evolved from ruthless conquerors in Star Trek: The Original ... villagers take control of the planet, eventually establishing a government loyal to the Klingon Empire.

Created by Gene Roddenberry, Star Trek is a sci-fi media franchise that began in the 1960s with a TV series. The TV show aired from 1966 to 1969 and was cancelled after three seasons.

(In “Star Trek,” the Prime Directive prohibits Starfleet from interfering with a society or planet’s natural development ... with ridges as seen on Klingon characters.