The coach is known for his short and explosive temper; his catchphrase "it's fucking embarrassing" can be heard not only directed at players, but when he is distracted on the golf course (A Fuss at the Golf Course) or on stage (Letterkenny Talent Show). This may be related to the passing of his beloved wife, Barbara, shortly before the series commences.
He was mostly unsuccessful with the Letterkenny Shamrocks, at one point racking up ten losses in a row (Wingman Wayne). He was frustrated at players like Reilly and Jonesy, who he saw as poseurs more interested in the hockey player lifestyle than in winning games, though he praised them when they demonstrated more hustle (Wingman Wayne). He was infuriated when, after a lacklustre game, he saw the team standing in line to get into Stewart's rave at the Ag Hall only minutes before curfew (Rave).
He stepped down from the junior team when he heard the Letterkenny Irish needed a new bench boss. Reilly and Jonesy, who had been struggling to fit in with the senior players, were dismayed when he lambasted the "cakewalk" they have been having, sending them into personal crises as they questioned whether they wanted to continue playing (Finding Stormy a Stud).
After they put more effort into training, becoming the top scorers in the league, the Coach's attitude to them softens somewhat. In pursuit of a single victory, he encourages a strategy of selfish hockey on the part of Jonesy and Riley, with the mantra "they don't ask how, they ask how many" (Sled Shack). He further gives them the responsibility of rebuilding team unity after they are split in competition over Angie (Puck Bunny).
Just as they begin to take leadership of the team, Coach adds Shoresy to the lineup. He is deeply impressed with Shoresy, calling him a "tour de force, piece de resistance, masterpiece," but Reilly and Jonesy are disheartened to see him (MoDeans 2).
The team fails to win, but the brawl brings the team together, and as they celebrate, the Coach declares "I have never been less embarrassed in all my life" (Bradley Is a Killer).
After the Letterkenny Irish fold, in his words, "'cause it's Senior A whale shit hockey," he takes a job as head coach for the Letterkenny Shamrockettes, bringing Reilly and Jonesy along as assistant coaches. This team, too, faces unity problems which Reilly and Jonesy resolve. Finally winning a championship, he takes the trophy and collapses on the ice, sobbing with joy (Back to Back to Back).
Tanis calls him out of retirement, and he helps her to reconstitute the Letterkenny Irish, against his better judgment (W's Talk, Baby). Ultimately, all his star players qualify to play for the Kerry County Eagles, under his much more successful counterpart, and he retires from coaching to focus on playing on his beer league team, the No Regretzkys (Kids with Problems), as well as on his own fitness (Sundays are for Picking Stones).
The Coach has been villainous on occasion. As president of the board of the Letterkenny Grey Granite Copper Creek Whistle Ridge Golf and Country Club, he came into conflict with McMurray and the Hicks when the board voted to addle Canada goose eggs at the golf course, stopped only after a lengthy campaign of protest (A Fuss at the Golf Course). He also attempted to "tinker" with the Letterkenny Adult Spelling Bee one year, to win a $200 bet he had made with Tanis and Tyson, caught when the Hicks noticed that the hockey players were being given unusually easy words, like "hockey" (Letterkenny Spelling Bee).
He plays the ukulele and sings a song dedicated to his late wife, Barbara, at the Letterkenny Talent Show, but loses his temper when someone in the audience coughs during the performance, smashing the instrument and storming off stage (Letterkenny Talent Show).
The coach is a bearded man slightly older than the main characters—but not that much older. He dresses in a suit for games, and in a polo and plaid shorts on the golf course, but otherwise is most commonly seen in a warmup suit for his team, with a white undershirt. He has been somewhat heavyset for most of the series, but by Season 10 was shown in a regular exercise program, and considerably slimmed.
- → See 54 images of the Coach at Images of the Coach.