The commander of a Klingon cruiser sent to take custody of the fugitives Korris and Konmel in Heart of Glory, who afterwards invites Worf to serve with him one day.
K'Nera is a Klingon Defence Force officer who appears in the first-season episode Heart of Glory, set in 2364. His ship meets the Enterprise to collect the renegades rescued from the freighter Batris, who had stolen it and destroyed a Klingon cruiser sent after them.
Worf, moved by the fugitives' longing for battle, asks K'Nera to let them die fighting on some hostile world instead of facing execution. K'Nera is not unsympathetic, but answers that he has his orders.
After Konmel is killed and Worf is forced to shoot Korris in engineering, Worf reports that they died well. K'Nera tells him that his talents would be welcome among his own people when his service on the Enterprise is over.