The engineer of the Klingon bird-of-prey Rotarran, a blunt officer who tells Jadzia Dax how far the crew's spirit has fallen and who warns that the ship is ripe for mutiny.
Tavana is the engineering officer of the IKS Rotarran in Soldiers of the Empire, played by Sandra Nelson.
When Jadzia Dax joins the ship in 2373 she wins Tavana over with barrels of bloodwine and her long experience of Klingon ways. Tavana is frank about the Rotarran's condition: the crew have been beaten too often, they believe the ship is cursed, and they have begun to doubt that Martok, a survivor of a Dominion prison camp, still has the heart to fight.
It is through Tavana that Dax learns how close the crew is to violence, a warning Dax carries to Worf. After Worf's challenge rouses Martok, Tavana takes her station for the attack on the Jem'Hadar and the rescue of the B'Moth's crew.