[1] Kahless is an important religious and historical figure to the Klingon race[2] and has been studied in explorations of the philosophy within the setting of Star Trek.

The spouse of Kahless was Lady Lukara, whom he had become romantically involved with after a battle against five hundred warriors at the Great Hall of Qam-Chee, when the local garrison routed.

In the Next Generation episode "Rightful Heir," Kahless was alluded to as having united the Klingon Empire some 1,500 years ago after fighting and killing the tyrant Molor with the first bat'leth.

Furthermore, in the episode, a clone of Kahless was created by caretakers of the planet Boreth (a Klingon pilgrimage site) using dried blood from the ancient dagger of Molor in an attempt to gain political influence.

The scheme was circumvented by Worf, who learned the truth and subsequently arranged for the new Kahless II to occupy a ceremonial position as a figurehead and spiritual leader in the Klingon Empire.

[3] They note that when Kahless appears not as a vision, but an actual person to Worf, he reacts with skepticism, and responds by using the advanced technology at his disposal to investigate.

[3] In the Star Trek science fiction universe, the Clone of Kahless was created by a Klingon scientist named Gothmara, with the assistance and aid of materials provided by the Clerics, "The r'tak of Boreth.

"[10] By Lieutenant Worf's design and with the cooperation of Chancellor Gowron, the Clone of Kahless becomes emperor of the Klingon Empire in the Star Trek: The Next Generation episode "Rightful Heir.

This idealism is seen to be unfounded when the Clone's opposition to the Klingon invasion of Cardassian space is unheeded by the High Council and their armies.

[15] Previous episodes and book had established a kind of Klingon religion in the Star Trek lore, and the writing for Kahless was influenced by that.

It was Morath, who was not blood-related but was still considered a brother under Klingon custom, who forced Kahless to stick with his rebellion and slay the tyrant.

While Molor was indeed a strong and capable warrior, when Kahless and Morath finally met him in battle, he was severely weakened by the plague happening at the time.