The Fek'lhri were a race of demons within Klingon beliefs. (Decipher RPG module: Aliens)

During the time of Kahless the Unforgettable, the legendary warrior forged the first Bat'leth which he used to conquer the Fek'lhri. (DS9 episode: "The Sword of Kahless")

In a report by Quen to Chancellor Martok, the member of Klingon intelligence stated that Nero should not have defeated the Empire's best ships, even if working with the Fek'lhri. (ST website: Ships of the Line)

Considering the name, its possible that there exists a relationship between them and the Fek'lhr but the nature of it is unknown.

External LinkEdit

Fek'lhri article at Memory Alpha, the wiki for canon Star Trek.

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