Born in 2345 to Mogh, he was left in the care of Lorgh, a family friend. Joining the Klingon Defence Force when he reached adulthood, he rose to become a commander. He discovered Duras's coverup of Khitomer and worked with Worf to uncover it. In the end he was severly injured by an attack of Duras's and Worf was forced to take a discommendation. After the death of Chancellor K'mpec he lent his support to Gowron, and led his forces to victory against the Duras in a critical battle. This earned the Mogh family new respect and Kurn recieved a seat on the council which was all taken away when Worf was seen as defecting to the Federation during a time of war. In 2372, Kurn went to Deep Space 9 in an attempt to convince Worf to return to Qo'noS with him, so as to restore the family reputation. When Worf declined, Kurn demanded to be killed in Mauk-to'Vor but when this fails he gets brainwashed and becomes Rodek of the House of Noggra.