Satsuki is a tall, slim woman with an angular face similar to her mother's. She has thigh-length dark-blue tinted hair that has inward diamond-shaped bangs hanging over her forehead, blue eyes, rather thick eyebrows and a rather large bust (although Mako Mankanshoku stated in her first head-to-head encounter with Ryūko Matoi that the latter had "bigger boobs"). She has the habit of perpetually frowning, although she does smile on rare occasions. Satsuki had long hair as a child. 