@simonzerafa

The bulging eyes give it away. Gowron is 24th cy. Kahless is a much older, somewhat mythical character, who first appeared in "The Savage Curtain."

https://memory-alpha.fandom.com/wiki/Gowron

Gowron

Gowron, son of M'Rel, was Chancellor of the Klingon High Council in the late 24th century. He ruled during the Klingon Civil War, Klingon-Cardassian War, and Dominion War. When an unwarranted belief that General Martok's achievements in the Dominion War threatened his position led to him undermining the Klingon war effort against the Dominion in 2375, he was killed by Worf. Before 2367, Gowron was a political outsider, who often challenged the decisions of the Klingon High Council. After the...

Memory Alpha

@simonzerafa

Gowron was played by Robert O'Reilly, whose on-screen TV career seems to have launched with Fantasy Island in 1979. Interesting resume anyway. (Transportation Dept)

https://www.imdb.com/name/nm0642481/

@darth_hideout @simonzerafa Gowron held more political power than (Emperor) Kahless (II, a clone), and ordered the invasion of the Cardassian Union over the objections of the Emperor.

So Gowron's supremacy over (the originally presented as resurrected) Kahless seems to be referenced in the original post.