Coach Bogner is the physical education director at Greendale Community College. He insists that his students wear the required P.E. uniform for all his classes, even billiards. His first and only appearance was in the Season One episode "Physical Education". He was portrayed by actor Blake Clark.
In the study group's first year at Greendale, Jeff eagerly signs up for Billiards as a P.E. credit considering it the only sport you can play while looking cool. Before the class starts he meets Coach Bogner who compliments his obvious skill at the game. Bogner then hands out the standard issue attire for PE classes at Greendale which consists of a tee shirt and a pair of tight fitting athletic shorts. Jeff was uncomfortable with the uniform as it didn't flatter him due to his height and long legs. His classmates were amused by his appearance making him self- conscious. Despite his discomfort and complaint, Bogner insisted that he wear the uniform just like everyone else. After Jeff refuses to adhere to the dress code, Bogner deduces Jeff's true reasons for not wearing the shorts. He declares that Jeff is more worried about looking cool than playing pool shaming him in front of the class for his vanity.
After some inspiration from Abed (and a few insulting PA announcements from Bogner) Jeff dons his shorts and challenges Bogner to a game of pool. Bogner accepts and both players perform well. After a few shots, Bogner accuses Jeff of not learning anything, just how to look cool in shorts. Jeff counters by pulling his own shorts down exposing his underwear. Bogner follows suit and they continue playing wearing only their briefs. As the game comes down to the last shot Bogner again confronts Jeff, saying that no matter who wins, all that would be remembered is that one man "loved clothes and the other loved game." With a cry, both men rip off their last piece of clothing and stand naked before the crowd. Bogner misses a tough rail shot on the 8-ball but Jeff sinks it on a long corner shot to win. Coach Bogner congratulates Jeff and gives him permission to wear whatever he wants during Billiards class. Having finally earned Bogner's respect, Jeff announces that he chooses shorts. Bogner responds by kissing Jeff full on the mouth much to the shock of the crowd.