Chuck Bartowski
Sarah Walker
John Casey
Bryce Larkin
Langston Graham
Stephen Bartowski
Ellie Woodcomb
Christian Woodcomb
Sarah Walker is the alias[2] of one of the main characters of the fictional 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 accidentally downloads the secret government computer known as the Intersect into his brain. She is the leading female character and love interest of Chuck Bartowski.