Kahless II

Not at all related to the original Kahless, or even a True Klingon, but a member of the species of Humans. His real name is Kor Roshenko, a native of the planet Quo'nos born in 2958 A.D. In 2978 A.D., the High Council of the Klingon Empire crowned him as Kahless II in order to place a figurehead ruler on the long-vacant Imperial Throne. He is still ruling (though with the real authority in the hands of the High Council) in 3000 A.D.