Jagi is a fictional character from the anime and manga series Hokuto no Ken, also known as Fist of the North Star. Serving as one of the series' primary antagonists, Jagi is one of the four adoptive brothers trained in the Hokuto Shinken martial arts. Driven by jealousy and a desire for power, Jagi betrays his brothers and seeks to destroy them. His character is marked by his treacherous nature and ruthless pursuit of revenge against his more honorable siblings. Jagi's actions and motivations add depth and complexity to the series' exploration of loyalty and betrayal.