Alex was named after her father, Alex Coburn. Both Alex and her mother believed that he had died in battle when, in reality, her father's death had been faked as a cover for his recruitment into the NSA, where he is given the alias of John Casey.
Season three Edit
In "Chuck Versus the Subway", Casey revealed to her that he is her birth father, instructing her to take what was hidden in his locker at the Buy More, as well as to take her mother and run as Casey and the rest of Team Bartowski was being hunted by the Ring. Morgan Grimes as an assistant manager, escorted her to Casey's locker at the Buy More as requested by Casey, where she finds that he has provided her with money to run away and to go off grid, as well as numerous fake passports. When Chuck and Ellie have a dinner in memory of their late father Stephen Bartowski, she shows up. Before that, she has also given Morgan her phone number, which Casey was not too pleased about.
It is also worth noting that Alex is studying Criminal Psyche.
Season four Edit
Early in Season Four, she begins a romantic relationship with Morgan Grimes. Casey does not approve of this until Morgan nearly dies saving Chuck, Sarah, and Casey on a spy mission in "Chuck Versus the Couch Lock". Alex also shows deep concern about losing Casey when he is seriously injured from a fall when Sarah unintentionally throws him out a 9-story window.
She also appears to have noticed Casey's deep love for firearms and his bonsai tree, as she jokingly remarks on wanting to bring the guns along when she brought his bonsai tree to him at the hospital.
Season five Edit
When Morgan Grimes grows arrogant via downloading from the corrupted Intersect Glasses in the season four finale, his relationship with Alex is greatly compromised as of "Chuck Versus the Frosted Tips". He then simply dumps her by text messaging, which angers Casey enough to beat him up at the end of the episode.
In "Chuck Versus the Business Trip", when Morgan's Intersect has been removed, he becomes himself again and decides to talk to Alex despite Casey warning him to back off. Morgan confesses to Alex about still being a spy, and that he briefly had the Intersect. Having lied to her, Alex only decides to stay as friends with Morgan since then.
As a Christmas present in "Chuck vs. the Santa Suit", Casey decided to give Alex a teddy bear to hopefully make up for all the years without him in her life. At the end of the episode, he tells her that he loves her. Casey however also warms up to Morgan and decides to tell Alex to give Morgan another chance at a relationship with her.
She was later kidnapped by Nicholas Quinn's goons in Chuck Versus the Bullet Train in order to force Casey to release him. Alex was rescued with the timely intervention of Jeff & Lester who assisted Morgan and Awesome in freeing her.
The final episode saw Alex and Morgan move in with each other following Team Bartowski's final mission. They both saw Casey off as he went to pursue his love, Gertude Verbanski.
Inherited traits Edit
When Casey abducts Alex from her work with the intention of protecting her from the Ring operative, she is under the impression that she is being kidnapped, as she has no knowledge of Casey being her father at that point. Not believing that Casey is trying to help her, she attempts to escape by attacking Casey when she exits his vehicle. Here, it becomes apparent that she has great fighting skills, parallel to those of her father - she claims that she learned these skills at a self-defense class, in which she gained an A grade.
In the Season Four episode "Chuck Versus the Seduction Impossible", according to Morgan, Alex is a lot like her father whenever she is angry. According to Kathleen, both Alex and Casey cross their middle finger over their index finger whenever they are nervous.
Anna Wu • Alex McHugh • Alexei Volkoff • Bryce Larkin • Carina Miller • Clara Woodcomb • Clyde Decker • Daniel Shaw • Diane Beckman • Emmett Milbarge • Gertrude Verbanski • Hannah • Harry Tang • Jane Bentley • Jill Roberts • Langston Graham • Mary Bartowski • Nicholas Quinn • Stephen Bartowski • Vivian Volkoff