CC-1138, nicknamed "Bacara," was a Clone Commander who led the Galactic Marines, a unit of clone troopers famous for its distinctive armor and relentlessness in combat. Bacara served the Galactic Republic alongside Jedi General Ki-Adi-Mundi during the Clone Wars; the pair fought to capture the planet Mygeeto from the Confederacy of Independent Systems. When Order 66 was issued, Bacara and the Galactic Marines turned against Mundi and executed him.