Since 2013, corporal punishment by coaches in athletic clubs has been decreasing. However, there have been instances of coaches perpetrating violence while coaching students, despite the existence of penalties for corporal punishment. Such instances may be due to individual personality, whereby feelings of dissatisfaction are easily translated into violence. In this study, we attempted to clarify the relationship between severe forms of coaching (corporal punishment, rants) and coaches' personalities. We obtained questionnaire responses from 425 college students regarding their experiences with corporal punishment and rants by their coaches and the Big Five personality traits of the coaches. Among the respondents, 21.9% (93 students) had experienced corporal punishment and 53.6% (227 students) had endured rants. Hierarchical cluster analysis was conducted to identify four coach personality clusters (Resilients, Overcontrollers, Undercontrollers, Non-identifiables). A comparison among the clusters revealed that overcontrolling coaches (high neuroticism, low agreeableness) exhibited a significantly higher frequency of corporal punishment and rants. These results indicate that a fundamental understanding of the individual characteristics behind the violent behavior (social behavior) of coaches is essential for eradication of violence such as corporal punishment and rants.