A Virtual YouTuber and member of hololive Gamers. She is a wolf girl with an eclectic design with a primarily black-red color scheme, mixing Japanese and western elements to her outfit. Her personal emoji is 🌲 ("Evergreen tree", it refers to her christmas tree-like feathered hair; otherwise, it's pronounced "Momi", refering to the Momi Fir).
Her normal outfit consists of a sleeveless sailor shirt with a pleated skirt with a slit over her left thigh as well as detached sleeves secured with red and white ropes decorated with jingle bells. Her neckerchief also has a red and white braid motif. A flower print is on her left sleeve and on her skirt, to the right side of the slit.
Her hair is tied at midriff-level with two ropes, one red and the other white, in a bow with large loops. She has very long flipped black hair with several "feathers" (see above), some red streaks on her bangs to her left side and white tips. She also has a distinctive hairclip shaped like a stylized eye glint.
Often paired with fellow canid Shirakami Fubuki due to being another member of Hololive Gamers.
By her fellows' standards, Mio is quite the normal girl, lacking any overly noticeable eccentricities. This often leads to her being the only sane person when her friends are up to their antics, and give her quite the tsukkomi aura. The only thing that comes close is the ease of which she enters laughing fits in the face of other girls antics.
Her cat is named Taiga.