John Casey (Chuck)

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)
Information
Nickname(s)	Angel de la Muerte (Angel of Death) Angel de la Vida (Angel of Life) Sugar Bear
Aliases	John Casey Alexander Coburn (birth name)
Gender	Male
Occupation	Former or retired USMC officer Former NSA Agent Briefly CIA-NCS agent Private intelligence operative Buy More "Greenshirt" & "Deputy Assistant Manager" (cover)
Title	Colonel
Family	Kathleen McHugh (former fiancee) Alex McHugh (daughter)
Religion	Protestant
Born	Alexander Coburn 1971 or earlier
Affiliation	United States Marine Corps National Security Agency Operation Bartowski Morgan Grimes (partner & roommate) Sarah Walker (partner-cum-employer) Chuck Bartowski (partner-cum-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.

Angel de la Muerte (Angel of Death) Angel de la Vida (Angel of Life)

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.

Only scattered information has been revealed about John Casey's past or his family. "Chuck Versus the Tic Tac" reveals that his real name is Alexander Coburn (Chuck had flashed on this name in a previous episode, but the face is redacted and Casey cautions him not to dig further) and that under the command of Col. James Keller, he faked his death and was given a new identity of John Casey. In a second-season episode, Casey was shown calling someone he referred to as his mother, but considering the situation and the fact that he referred to himself as "Johnny Boy," it seems he was speaking in code. He was a choirboy and has perfect pitch.

Even his age is unknown, though there are clues in his revealed career history. He was attempting assassinations in the 1980s, he left the Marines to become an agent in January 1989, he was 23 years old when he started training with his mentor, NSA instructor Ty Bennett, and it was 1994 at some point in his training with Bennett.