|In the study group's third year at Greendale, Ben Chang is hired by Dean Pelton to be a campus security guard. After his boss Sgt. Nunez quits, Chang becomes the only protection the college has and starts feeling the pressure of his responsibility. He borrows a tranquilizer gun from a friend at the zoo which he believes is necessary to carry out his duties. Its first appearance was in the Season Three episode "Contemporary Impressionists".|
|When classes resumed after the 2011 Winter Break, Sgt. Chang overreacted to a situation that went down in the study room. He fired a tranquilizer gun at a celebrity impersonator, unaware that Abed had hired him to reenact a scene from the movie "The Fugitive". Dean Pelton reprimanded Chang who argued that being the only guard on campus caused him to resort to extreme measures. Pelton authorized him to try and recruit student volunteers to assist him in his duties. Chang is unsuccessful at finding college aged volunteers but has better luck that night when he runs into middle schoolers at a Bar Mitzvah he is providing security for.
|The study group are also in attendance helping to settle Abed's debt to the company he hired his impersonators from. When Jeff goes on an ego fueled rampage, Chang again uses his dart gun and manages to hit his target. He assembled an army of preteens and hired a Moby impersonator resembling Dean Pelton for a scheme to take over Greendale. Chang is later seen wielding the tranquilizer gun briefly during the war between Abed's pillow fort and Troy's blanket fort ("Pillows and Blankets"). After a riot broke out during "Star-Burns"' wake, he preempts Pelton's attempt to pin the blame on him. Arriving at his office, he introduces Pelton to his replacement before shooting him with the tranquilizer gun ("Course Listing Unavailable").
- “FREEZE!”— Chang
(After Chang shoots out the study room window)
- “Chang, they're just acting!”— Jeff
- “Oh, sorry...What? I got a friend at the zoo.”— Chang