Kevin Conway

Actor (Kahless) — The Next Generation

American actor (1942–2020) who played the clone of Kahless the Unforgettable, later installed as ceremonial Klingon emperor, in the Next Generation episode Rightful Heir.

Kevin Conway was an American actor and director with a strong stage reputation, seen on screen in Slaughterhouse-Five, Gettysburg and Thirteen Days and heard as the Control Voice of the revived The Outer Limits.
In Rightful Heir he plays the figure who appears to Worf in the caves of Boreth, apparently the returned Kahless. He tells the old stories, wins followers and is then beaten by Gowron in single combat, which raises doubts.
The clerics admit that he was grown from ancient blood and given the legends as memories. Conway plays his bewilderment with dignity, and Worf's compromise makes him emperor in name, a moral leader without political power.