Kiryuuin Satsuki is a fictional character from the anime and manga series Kill la Kill. She serves as the main antagonist and is known for her strong leadership and combat skills. Satsuki is the president of the student council at Honnouji Academy, where she enforces strict rules and wields immense power over the students. Satsuki is characterized by her distinctive long, dark hair and her signature outfit, which includes a uniform made from a special fabric called Goku Uniform. Throughout the series, she seeks to control the academy and uncover the truth behind the mysterious powers of Life Fibers, which play a central role in the story.