: Establishes Chuck’s new life as a human computer. He balances his retail job with high-stakes missions while dealing with early recurring characters like Bryce Larkin and Lou Palone.
: Morgan Grimes, Chuck's loyal but often oblivious partner-in-crime. Season Summaries
: Led by CIA Agent Sarah Walker and NSA Major John Casey.
: Ellie Bartowski (Chuck's sister) and her husband, Devon "Captain Awesome" Woodcomb.
: Introduces major lore, including Chuck's father, Stephen Bartowski (played by Scott Bakula). The season culminates in the destruction of the original Intersect and Chuck receiving the upgraded "Intersect 2.0," which grants him physical skills like martial arts.
: Chuck officially trains to become a "real" spy. This season introduces Daniel Shaw (Brandon Routh) as a mentor/rival and sees Chuck and Sarah finally solidify their relationship.