The ambitious but initially defeated coach of the SCLSU Mud Dogs who recruits Bobby to turn the team around. He confesses to forging Bobby's transcript for revenge against a rival, helps Bobby pass a GED, and develops new strategies to lead his team to victory.
Klein acts as Bobby's head coach and mentor, recognizing his potential and guiding his transition from water boy to player.
The two coaches share a decades-long professional rivalry rooted in stolen credit and career sabotage.
Explore the full interactive character relationship map of The Waterboy