She was born the daughter of a prostitute, and raised in a brothel. When she reached the Age of Ascension, she joined the KDF. During the Dominion War, she built an excellent record, and earned a commendation for her service.
Following the war, she was assigned to the IKS Gorkon, and when that ship was ordered to support Ambassador Worf's mission to taD, Krevor was assigned as Worf's personal bodyguard for the duration. Although the assignment of a Houseless female by first officer Drex was meant as an insult to Worf, he refused to acknowledge it as such, and rejected Krevor's suggestion that he ask for a different guard. Krevor served well during during the taD mission, fighting alongside Worf against al'Hmatti rebels, and defending him against an attack by Governor Tiral. (TNG novel: Diplomatic Implausibility)
After the Gorkon's shakedown cruise, Krevor was assigned to Fifteenth Squad under the direct command of Leader Wol. She fought at San-Tarah, helping Fifteenth Squad secure the road leading from the Prime Village during the first engagement. In recognition of Fifteenth Squad's valiant actions, QaS DevwI' Vok chose them to defend the prize against the Children of San-Tarah in a "capture-the-flag" contest, the third of five contests to determine whether San-Tarah would become part of the Klingon Empire.
Fifteenth Squad was successful in defending the prize, although Krevor was mortally wounded in combat. As she died, she did so secure in the knowledge that she would join the honored dead in Sto-Vo-Kor, a scenario that seemed almost unreachable in her younger days due to her ignoble birth. (GKN novel: A Good Day to Die)