Kolana is a Klingon officer aboard Martok's flagship during the raid on Trelka V, who joins in the crew's mockery of the aged Kor after his mind fails him in battle.
Kolana appears in the seventh-season episode Once More Unto the Breach, played by Nancy Youngblut. She serves at the weapons station of the Ch'Tang, the bird-of-prey from which General Martok leads a cavalry raid behind Dominion lines.
She is on the bridge when Kor, given a junior post at Worf's request, takes command during an attack and begins issuing orders as though he were fighting a battle of decades earlier. Afterwards, in the mess hall, she and the helm officer Synon join Martok in taunting the old Dahar master about his senility, until the general himself loses the taste for it.
When Kor takes the Ning'tao back to hold off the pursuing Jem'Hadar alone, it is Kolana who reports from her console what the ship is achieving, and the crew salute him with a song.