Above all, Junko was deeply obsessed with despair, having found despair to be the most (and possibly the only) enjoyable emotion for him, whether it be inflicting despair unto others, or suffering from despair wholeheartedly. As the mastermind and leader of Ultimate Despair, Junko was shown to be highly intelligent, cunning, somewhat impulsive, extremely manipulative, and violent and cruel without remorse. Very apathetic and easily bored to an unhealthy and abnormal degree. Yandere, down bad.