Chris Redfield
Chris Redfield is a member of STARS (Special Tactics And Rescue Service) - specifically the leader of the Alpha Team in the first Resident Evil game. He also starred in Resident Evil: Code Veronica and headed up the cast in Resident Evil 5.
Sheva Alomar
Sheva is the companion of Chris Redfield in Resident Evil 5.
She is a well-trained B.S.A.A. agent from Africa, and serves as Chris Redfield's partner in the field. Sheva is adept with firearms and hand-to-hand combat. Her moves can even overwhelm Chris.