Chris Redfield is the main character of Resident Evil,Resident Evil: Code Veronica X and he will definitely be the one of the main characters in Resident Evil 5. Besides the main storyline, Chris was playable in the battle game (Or The Mercenaries) in Resident Evil 2, as well as Resident Evil: The Umbrella Chronicles.
 Plot Contributions
 Resident Evil
In the original Resident Evil, Chris and his S.T.A.R.S. team (Alpah team) was sent to investigate a mansion in the Arklay Mountains. While investigating the mansion it is discovered that the Umbrella Corporation was behind the outbreak of the monsters in the area. Their T-Virus, which was used in bio-weapons research, was released into the facility, turning everyone in the mansion and beyond the mansion into zombies. Albert Wesker, another S.T.A.R.S. member was a traitor to S.T.A.R.S, and wanted to steal the information about the T-Virus before it had been destroyed. Before his supposed death, Wesker releases the Tyrant to destroy the all remaining S.T.A.R.S. members.
 Resident Evil Code: Veronica
Chris has gone missing, and his sister Claire Redfield begins searching for him in one of Umbrella's bases located in Europe (she retrieved the coordinates from her ordeals in Resident Evil 2). She is later captured by Umbrella and taken to Rockfort Island, a solitary private isle owned by the Umbrella Corporation. The T-Virus breaks loose on the island. She sends a distress signal that makes its way to her brother Chris. Chris soon finds that Albert Wesker is still alive and has obtained superhuman powers from both the T-Virus and other unknown viruses. Chris manages to rescue Claire and escape from the base. Thought Wesker left empty handily, he still had Steve Burnside's body which contained theT-Veronica Virus.