Lursa and B’etor
Star Trek The Next Generation
As sister to Lursa, B’Etor was one of the Duras sisters responsible for the start of the Klingon Civil War in early-2368. She was the younger sister, the more seductive (and more promiscuous) of the two. She and Lursa supported their nephew Toral as the new Chancellor of the Klingon High Council. Toral was the illegitimate son of their brother Duras. She staked Toral’s claim just as Jean-Luc Picard, who was the Arbiter of Succession, was about to pronounce Gowron as Chancellor. In determining their claim, Picard went planet-side and paid an invited visit to B’Etor and Lursa. B’Etor attempted to convince him that Toral’s challenge must be approved. B’Etor made a futile effort to seduce Picard. (TNG: “Redemption“)
Lursa was a female Klingon officer of the 24th century Klingon Empire and a member of the House of Duras. She was the elder of the two Duras sisters, herself and B’Etor, sister of Duras and daughter of Ja’rod. Through Duras, she had a nephew, Toral. She was the mastermind behind her family’s fight to head the Klingon Empire.
In the first stage the Levodian flu, Klingons lost the ridges on their foreheads and began to look more Human. With the help of a Klingon scientist named Antaak, Dr. Phlox of the Earth starship Enterprise was able, using the DNA of Captain Archer, to formulate a cure that halted the genetic effects of the virus in the first stage. This retained the changes in appearance, along with some minor neural re-ordering.