Menchez was a Klingon Defense Force officer who commanded the IKS B'Cnah after he destroyed his previous vessel, and then, the IKS Kragoth. He was well acquainted with the Captain of the USS Phoenix-X and, in fact, shared an exchange program between both vessels, in the late 24th century, where half of each crew served on the other's ship. (Star Trek: Phoenix-X, Star Trek Online: Literary Challenge)