- For the legendary Klingon with a similar sounding name, please see Kahless the Unforgettable.
At the time of the Romulan attack on Khitomer in 2346, Kahlest was on the planet along with Worf and his father, Mogh. Kahlest survived the attack and was transported by the USS Intrepid to the biomedical facility at Starbase 24 for treatment. Due to the severity of her injuries, she was unaware that Worf had survived and that he may have been aboard the starship.
In 2366, when Worf's brother Kurn came aboard the USS Enterprise-D to inform him that their father would soon be branded a traitor, Worf returned to Qo'noS and re-encountered Kahlest who verified Kurn's story.