Ookami Mio is a black-haired wolf girl who appeared mysteriously on the scene, debuting as part of Hololive Gamers alongside Fubuki, Okayu, and Korone. Adorned with a traditional shrine maiden (miko) styled outfit, wolf ears, and a fluffy tail, Mio quickly became known as the sweet, nurturing, and grounding "Mama" figure of the Hololive group.

While she loves gaming and hanging out with her friends, Mio is famous for her comforting presence, wheezing laugh, tarot card readings, and her occasional high-strung panic during horror games or gross-out moments (leading to her iconic barf/puke gags). She is incredibly sweet, affectionate, and protective, acting as a warm sanctuary for anyone having a rough day.