Commander of the Klingon Bird of Prey that was ordered to secure the release of Klingon general Koord at the planet Nimbus III.
Klaa, an ambitious young officer, saw the mission as an opportunity to distinguish himself by challenging the legendary Captain Kirk. (Star Trek V: The Final Frontier)
Klaa later served as translator in 2293 when Kirk and McCoy were tried for the murder of Chancellor Gorkon. (Star Trek VI: The Undiscovered Country)