Mother was very similar in appearance to her "son" Rui, having the same milky-white skin, teal eyelashes and nails, and circular, red facial markings. She also possesses a short and curvaceous physique. Additionally, she had bushy eyebrows and long, white hair parted down the middle of her face which was tied with teal orbs into two, thick strands.Mother was cruel, unfeeling, and murderous towards humans. She controlled dozens of Demon Slayers through her threads and manipulated them in killing.