(Played by James Avery)
High-ranking Klingon officer in charge of the program to adapt Soong's stolen "enhanced" Augment DNA research for Klingons. His son, Marab, was one of those genetically enhanced in the rpogram, then falling ill to the virus that emerged as a by-product from the research. When research by Klingon scientist Antaak failed to find a cure to the evetually fatal virus, K'Vagh in 2154 ordered the kidnapping of Dr. Phlox of the Earth Starfleet Enterprise in a forced attempt to utilize his research expertise. Pressed for time, K'Vagh eventually tested the cure and presumably emerged as a "smooth-head" Klingon.