MIO is a medium-height, slender female with light skin. She has pink hair, which she keeps in long pigtails, and a hat that resembles a futuristic version of cat ears, with a mouthpiece. She wears a Galaxy Corporation uniform, distinguished by the blue color, while most of the other receptionists wear green.

MIO's personality is that of a stereotypical teenage girl. She is bubbly and upbeat, which adds to her popularity. However, she also seems to have a more serious side, as shown during a cutscene in which she smuggles data to Dr. Pocacchio. In this cutscene, it is also revealed that she was a childhood friend of Mark, the deceased son of Dr. Pocacchio.