John Casey (Chuck)

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John Casey
Chuck character
Adam Baldwin as John Casey
First appearance	"Chuck Versus the Intersect"
Last appearance	"Chuck Versus the Goodbye"
Portrayed by	Adam Baldwin Sterling Jones (young Coburn)
In-universe information
Alias	Alexander Coburn (birth name)
Nickname	Angel de la Muerte (Angel of Death) Angel de la Vida (Angel of Life) Sugar Bear
Gender	Male
Title	Colonel
Occupation	Former or retired USMC officer[1] Former NSA Agent Briefly CIA-NCS agent[2] Private intelligence operative[1] Buy More "Greenshirt" & "Deputy Assistant Manager" (cover)
Family	Kathleen McHugh (former fiancee) Alex McHugh (daughter)
Religion	Protestant[3]
Born	1971 or earlier
Affiliation	United States Marine Corps National Security Agency Operation Bartowski Morgan Grimes (partner & roommate) Sarah Walker (partner-employer) Chuck Bartowski (partner-employer) Brigadier General Diane Beckman (former commanding officer)
Expertise	Highly trained in espionage tradecraft; hand-to-hand combat and firearms expert (particularly sniper rifles), and as a special forces officer, has been trained to resist extensive and brutal interrogation; champion of Quantify data process and liability programming.

Colonel John Casey (born Alexander Coburn) is portrayed by actor Adam Baldwin on the television show Chuck on NBC. Prior to the episode "Chuck Versus the Tic Tac," he was partnered with CIA agent Sarah Walker to protect Chuck Bartowski.

In episode 21 of season 2, "Chuck Versus the Colonel," Major Casey was promoted and subsequently addressed as "colonel." In episode 10 of season 3, "Chuck Versus the Tic Tac," Colonel Casey was dismissed, adopting his cover of an overaged retail electronics salesman as his life. He was reinstated in "Chuck Versus the Other Guy" as a condition of his turning over the Ring director whom he captured in Paris.

He was dismissed again at the end of the season 4 "Chuck Versus the Cliffhanger", and was hired by Chuck and Sarah for their private spy operation. He left Carmichael Industries to pursue his love interest, Gertrude, in the series finale.