Colonel Barber was a character in Modern Warfare 2: Ghost.
At one point during his career, he was captured and brainwashed by Manuel Roba. He was sent back to the U.S. and stayed at RAF Bonnington to watch Kevin Sparks and Marcus Washington. When the two are killed, he made sure that the U.S. Army did not know about it and watched the footage of the night that the two are killed. He saw a masked man that he knew to be Simon Riley and informed Roba. His fate following the events of Modern Warfare 2: Ghost was unknown.