. . . "Sarah Lisa Walker"@en . . . . "Jenny Burton"@en . . "\"Chuck Versus the Intersect\"" . "Sarah Lisa Bartowski"@en . . . . "Sam Lisa (surname unknown) (real name)"@en . "Sarah Lisa Bartowski (f/k/a Walker) is the alias of one of the main characters of the television show Chuck on NBC. She is portrayed by Yvonne Strahovski and is one of two agents assigned by the NSA and CIA to protect Chuck Bartowski after he unwittingly downloads the secret government computer known as the Intersect into his brain."@en .