Sae Kurosaki is a major antagonist in the series Kamen Rider Fourze, serving as the human form of the Scorpion Zodiarts. As the student council president of Amanogawa High School, Sae appears strict and composed, but secretly transforms into the ruthless Scorpion Zodiarts. She is a core member of the antagonistic Horoscopes, orchestrating events to challenge the Kamen Riders. Her duality and complex motivations make her a memorable and critical opponent for the protagonists.