C. Black was a Human male who served as a Military Assault Command Operations soldier during the mid-22nd century. In 2153, Azar was assigned as part of the MACO detachment aboard the starship Enterprise NX-01 for the mission into the Delphic Expanse. After Enterprise returned to Earth in 2154, Azar remained aboard as part of the MACO Detachment.
He was one of the volunteers who would join the mission to board the Xindi weapon on February 13, 2154. Lieutenant Reed chose M. Romero, M. Forbes, and W. Woods, and he remained on board Enterprise. (ENT: "Countdown")
The same year Black accompanied Captain Archer along W. Woods for a meeting on Earth to negotiate with Vosk and return the hostage, Commander Tucker. (ENT: "Storm Front, Part II")
He was one of the MACOs who guarded the Orion slave girls D'Nesh, Maras, and Navaar and was hypnotized by their ability to break the will of men. (ENT: "Bound")
This MACO was played by an unknown actor who received no credit for his appearances. He also had a mirror universe counterpart, C. Black.
This actor also appeared in a background role as a Dinner Party Waiter in the Desperate Housewives episode "Sweetheart, I Have to Confess" in 2006.