Brannon Braga was a Starfleet officer in the 24th century. His planet of origin was Sherman's Planet. He was a lieutenant commander in the years 2369-2372 and a commander in 2374.
In 2369, he was a crew member aboard the USS Enterprise-D. He was one of seventeen individuals who were from worlds outside the Federation. His proteins were tested by Doctor Beverly Crusher for a possible configuration match with the fragments of a 4 billion-year old genetic program. The results came back negative. (TNG: "The Chase")
In 2371, he was a crew member aboard the USS Voyager. He was among the crew stranded in the Delta Quadrant, when Voyager was forcefully brought there by the Caretaker.
In 2372, he was listed on the Planetary Geosciences Division duty roster. (VOY: "Parturition")
In 2374, he was listed on a crew manifest. (VOY: "The Killing Game", crew manifest)