Coach Beaulieu is the coach of the Louisiana Cougars, and in his many years as head coach has won dozens of games and is garnered respect by the players and his competitors. Though The Waterboy is meant to be a simple comedy, Coach Beaulieu is an evil, devious, manipulative and cruel character, who is willing to do anything to get his way. He has caused great mental pain to two of the main characters, Bobby Boucher and Coach Klein. He is shown to be willing to do anything to win and doesn't care who gets hurt in the way.

Back in the 70's, he and Coach Klein were up to replace the Head Coach at the time. In a green book, Coach Klein had thought up clever plays that could win him the Head Coach position. But Red was able to trick him into willingly handing over the plays, winning Red the position, and once he received the job and was through with Coach Klein, he fired him taking away his dignity. Coach Klein was eventually hired as coach for an unsuccessful college football team, the Mud Dogs.

During those years, he hired a waterboy named Bobby Boucher. In the time that Bobby worked for him, he berated him and allowed Bobby to be bullied by his players, causing much frustration to the poor boy. After 30 years, he fired Bobby, only to learn in a bar that Bobby had become a successful football pla…