Jagi is one of the main antagonists in the anime series Hokuto no Ken, also known as Fist of the North Star. He is one of the four adopted brothers trained in the deadly martial art of Hokuto Shinken. Driven by jealousy and resentment towards his younger brother Kenshiro, Jagi poses as him to tarnish his reputation and gain power. His actions are fueled by bitterness over being overshadowed by Kenshiro's rightful succession as the Hokuto Shinken master. Jagi's character embodies themes of envy and betrayal, making him a complex villain in the series.