One of the S.T.A.R.S. members who survived the "Mansion Incident" in Raccoon City, Chris is tough but honorable to a fault. He is an excellent marksman and, thanks to his time in the air force, a fine fighter pilot. His affection for his sister Claire can be clearly seen in his single-handed attempt to free her from her imprisonment on Rockford Island. Having foiled the plans of his arch-enemy Wesker, Chris loses his memory during another operation, but still returns to the front lines of the BSAA in 2013 to counter the large-scale bioterrorist attack in Lanshiang, China.
Chris has changed in appearance over the series, from the agreeable young man in the remake of RE1 and Code Veronica, to the buff, unyielding character in Revelations and RE5. In a way, the latter is more of a return to form considering how he was portrayed in the opening movie and illustrations of the original RE1.