Koxx was a male Klingon officer assigned to the IKS Gorkon in 2376, serving as relief helmsman, with the rank Ensign (TNG - The Brave and the Bold, Book Two novella: The Final Artifact)

By 2381, he held the rank of Commander, and commanded a trio of Birds-of-Prey, the IKS Jor, the IKS Khich, and the IKS Nukmay, attached to the Fifth Battle Fleet commanded by General Klag. (ST novel: A Singular Destiny)