Captain Chris Redfield is an American operator in the Bioterrorism Security Assessment Alliance, in which he has served since its foundation in 2003. Redfield has built up and dedicated his career in destroying Bio Organic Weapons and fighting against producers and sellers of bioweapons after his experiences with bioterrorism in 1998. He is the older brother of TerraSave member Claire Redfield.

Early life & Air Force career Not much is known about Redfield's early life, except that he and Claire had lost their parents at some point before 1998, having only each other as family. As an adult, Redfield joined the United States Air Force, where he received flight training for both planes and helicopters. He served in a unit alongside Barry Burton, whom he befriended. Redfield held strong convictions that often put him at odds with his senior officers, and he either resigned in protest or was discharged for insubordination. During this period Redfield also trained with a variety of weapons, including knives, and was known for his skills in hand-to-hand combat and marksmanship, which he won a contest for.

Law enforcement career After leaving the Air Force, Redfield was scouted in 1996 by the Special Tactics and Rescue Service, a special law enforcement unit in Raccoon City. He accepted the invitation and was appointed point man for Alpha Team, where his flexible talent for precise handling of multiple firearm types earned him distinction as the unit's top marksman. His shooting skills also had Redfield participating in the Raccoon Police Department's intramural shooting competitions, for which he won at least one trophy.

Together with Burton, Redfield solved a number of difficult cases; though he often acted on his own initiative, his methods were often successful, and his punishment was limited to rebukes from Captain Albert Wesker, who recognized his abilities. He also befriended several S.T.A.R.S. members in his time with the unit, having became close friends with Joseph Frost and Forest Speyer; on holidays they often went into the suburbs and caused disturbances. His most significant and special friendship, however, was with Jill Valentine, with whom he developed a close partnership.

Redfield also trained his younger sister when she visited him and gave her a golden lighter and his S.T.A.R.S. knife as gifts, favouring a large combat knife instead.