Mirio is a tall young man with a very muscular build who possesses a number of noticeable scars around his lower arms. Mirio's design is very unique due to his beady blue eyes, drawn in a simplistic style with no visible sclera, and nose which is prominently rounder than most others. He has blond hair. Permeation: Mirio's Quirk allowed him to become intangible, letting him pass through any tangible matter; he could phase through walls and/or the ground, as well as let enemy attacks pass through