Troy Barnes is a former high school football star who now attends Greendale Community College. Born and raised in Greendale, Colorado, Troy made a name for himself as the varsity quarterback of his high school football team, and was also prom king. He injured himself during a "kegflip" in high school that cost him a football scholarship, an injury he later revealed to be intentional because he couldn't take the pressure of a talent scout at a big game. He now plays quarterback for the nonathletic Greendale Human Beings, saying he would rather play football for fun.
While he starts off hanging out with Pierce at Greendale, he becomes best friends with Abed who shares his peculiar sense of humor. The two spend most of their time at Greendale together. Instead of being Abed's roommate for their sophomore year, however, he decides to live in Pierce's mansion. While living with him over the summer, Troy started up a Twitter account documenting unintentionally funny things Pierce said that gained 600,000 followers. Troy often feels the need to assert that Shirley is not his mom. Long oblivious to the crush that Annie has on him, Troy later makes a few broad attempts at wooing her.
Troy is a Jehovah's Witness, as revealed in the episode "Comparative Religion," and he also shows hints of political conservatism and rides his bike to class. Though he tries to deny it, he is extremely talented at plumbing. He also plays down his serious interest in interpretive dance. Notably dim-witted, Troy has a number of unique opinions, such as that there are only boy dogs and girl cats.