__Height:__ 181 cm (5'11")
__Occupation:__ Student
__Affiliation:__ U.A. High School
__Quirk:__ Permeation

He is third-year student at U.A. High School and is part of The Big 3 _(the strongest three hero students in all of Japan)_.

Before [Izuku Midoriya](https://anilist.co/character/89028/Midoriya-Izuku), Mirio was the top candidate for [All Might](https://anilist.co/character/89224/Yagi-Toshinori)'s successor and inheritor of One For All. His Quirk, Permeation, gives him the ability to become intangible, letting him pass through any tangible matter; he can phase through walls and/or the ground, as well as let enemy attacks pass through him harmlessly.