Monokuma is a mischievous, sadistic robotic teddy bear who serves as the main antagonist in the "Danganronpa" series. With his black-and-white appearance and cheery yet menacing demeanor, he orchestrates deadly killing games, delighting in the despair and suffering of high school students. His unpredictable behavior, taunting nature, and brutal punishments make him an enigmatic and unforgettable character, embodying the constant battle between hope and despair in the series.