Hiachi has long black hair, dark eye sockets with black mucus dripping down from her eyes. She wears her iconic pink hat, which is noticeably stained. She has a wide, uncanny, forced smile. She wears a long plain white dress that is knee length. She was a frail 8-year-old girl before being cursed by Sama for 358 years. She's now an ancient demon, cursed to roam her maze for all eternity until Sama is killed. She can be heard humming a song originally made by her mother. She's 8 feet tall.