Berik

In the mirror universe, Berik was a $𝜇$ member of the House of Guul. In 2288, he was one of three newest and youngest members of the $𝜇$, along with his friends $𝜇$ and Rhaza. The three challenged $𝜇$ after he suggested sacrificing Klingon worlds to double the military budget, but the challenge was set aside by Regent $𝜇$. (TOS novel: The Sorrows of Empire)