MSX-DOS-tan is a rarer character, representing the Microsoft Japan version of DOS. In the few depictions of her, she is a young girl with grey hair in pigtails. Her hair has a large cowlick on top, and she appears to have a large X-shaped black bow in her hair from the shape of her hair ties. She has grey eyes, and wears a black T-shirt and shorts with a white apron over them. Her apron is decorated with grey accents and MSX badges.