Chuck

Colonel John Casey is portrayed by actor Adam Baldwin on the television show Chuck on NBC. He is partnered with CIA agent Sarah Walker to protect Chuck Bartowski.

As of episode 21 of season 2, "Chuck vs. the Colonel," Major Casey is promoted to the rank of colonel.

Biography
Virtually nothing has been revealed about John Casey's past or his family except his mother whom he called on Christmas. All that is known about is age is that he was 23 years old when he started training with his mentor, Ty Bennett. He was a choirboy and has perfect pitch. Although Casey has flown the B-2 bomber and expressed a clear interest in American military aviation technology he holds the rank of Colonel in the United States Marine Corps (In Episode 2 of Season 3, he states that he is a Marine before head-butting an assassin). At what point he was recruited into the NSA is currently unknown. Casey was mentored by Ty Bennett, who taught him hand-to-hand combat techniques and attempted to help Casey, who already possessed a short temper, find a "calm center". He also attended Roan Montgomery's course on Infiltration and Inducement of Enemy Personnel ("Seduction School") and failed it twice – although it was revealed that Montgomery failed him because Casey's partner was "too pretty," with Montgomery also musing that he should have failed Casey a few more times on account of his attractive partner.

Casey suffered a devastating personal tragedy while stationed undercover in Chechnya. He was involved with an Associated Press photographer named Ilsa Trinchina who was apparently killed in a bomb blast near the hotel where they were staying. The incident left him deeply traumatized, with cameras apparently causing flashbacks to the tragedy. It was later revealed that Ilsa was a French spy who had faked her own death. Ilsa reappeared in "Chuck vs. the Undercover Lover" as the undercover fiance of a Russian crime boss. Casey also had a final tryst with Ilsa after capturing the Russian crime boss before she departed for further espionage missions.

He has had previous dealings with CIA agents Bryce Larkin and Sarah Walker in the past, and has been intimately involved in some capacity with Sarah's DEA friend Carina as well.

Casey is seen as a staunch Republican. He is a supporter of Ronald Reagan, he is pro gun rights, and he has displayed distaste over the fact that Obama has discontinued Waterboarding.

According to an otherwise unmarked business card he gives Chuck in "Chuck vs. the Ring," Casey's personal private phone number is 323-555-0173. ("323" is actually a major west/central Los Angeles area code, but "555" of course is the fictional phone number prefix reserved for fictional uses, films and television—but nowhere else.) Casey's apartment number/street address at the complex he shares with Chuck and family is 1836 (street unknown). According to his ID card which Chuck once flashed on, Casey's NSA ID number is 5498-5684.