The knights of Gre'thor were thought to be unstoppable in battle and frequently went on missions of conquest for the glory of their temples. During their travels, they would demand food and shelter from the locals. Rarely did people deny the knights anything, for fear that the rage of the Deethkoras-i would befall them in the form of famine, fire, or plague.

The Ky'yot was the most sacred weapon of the knights of Gre'thor and they were never without it. This dagger was for one purpose only; to kill another knight of Gre'thor. If a knight failed in his duty of protecting a sacred artifact of the temple, that is, if the artifact they were charged with was lost, broken, or stolen, they were deemed disloyal to their god or goddess. The remaining six knights of that temple would hunt down and kill the fellow knight with their Ky'yot. Then in an elaborate ceremony, the blood of the fallen knight would anoint his or her successor.

The origin of the Ky'yot was divine. It was believed to be forged by Mat'Sagh from the spine of the very first knight of Gre'thor. The warrior was a dedicated follower of the Temple of Mat'Sagh and sacrificed his life protecting it from vandalism during a war between two clans. Pleased by his loyalty, the Deethkoras-i gifted each of their knights with a copy of the sacred dagger. It remains a strong reminder of the origin of the knights and is a symbol of their most sacred vow.

Near the end of the time of Kahless, the knights of Gre'thor went underground due to a religious battle during the birth of the united Klingon empire. The temples were burned down by the very knights who protected them in order for their contents to avoid being obtained by the emperor's court. The temple of Resu~t was the last to dissolve and it is believed by some, that the knights of her temple planned an attempt to assassinate Kahless. The knights were not seen again for centuries until just recently, parallel to the coming of the second Kahless.