Synon

From Memory Alpha, the free Star Trek reference.

Lieutenant Synon was a female Klingon warrior. She served as helmswoman aboard the IKS Ch'Tang under the command of General Martok in 2375. She had the honor to serve with Dahar Master Kor in his final mission. Awed at first by the legendary warrior, she turned on him after his wits failed him in the raid on Trelka V. Kor won back her respect by sacrificing himself in battle with the Jem'Hadar. (DS9: "Once More Unto the Breach")

Synon was played by actress Blake Lindsley.