Lursa

Lursa is a Klingon noblewoman and the elder sister of Duras, with whom her sister B'Etor shares a relentless ambition for power. In The Next Generation's "Redemption" the sisters, secretly backed by the Romulans, champion their nephew Toral's claim to lead the Klingon Empire and plunge it into civil war against Gowron. Later they deal in arms and appear in Deep Space Nine's "Past Prologue". In Star Trek Generations they ally with Dr. Soran and are killed when the Enterprise-D destroys their Bird-of-Prey.