CT-1776, nicknamed "Booster," was a clone trooper Sergeant (later a Captain in the Special Operations Brigade) during the Clone Wars, the galaxy-wide conflict between the Galactic Republic and the Confederacy of Independent Systems. Booster was a trooper of Torrent Company, a unit of the famed 501st Legion in the Grand Army of the Republic. Booster served under Clone Captain Rex, and was a freethinking, tough, and aggressive trooper. Though loyal and committed to his duty and to his fellow clones, Booster proved capable of questioning his superiors and, under extreme circumstances, outright disobeying orders if he believed them to be wrong. Booster displayed a strong working relationship and a degree of friendship with many of his brothers.