Klingon

The Klingons were a humanoid warrior species that originated from the planet Qo'noS (pronounced Kronos), an M-class planet in the Beta Quadrant. One of the major powers of the galaxy, the Klingons were a proud, tradition-bound people who valued honor and combat. The aggressive Klingon culture had made them an interstellar military power to be respected and feared. Source: Memory Alpha