Quirk: Permeation (透とう過か Tōka?): Mirio's Quirk allows him 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. While intangible, he experiences a falling sensation because he still has mass. Additionally, everything passes through him, including light, sound, and air; meaning, while his Quirk is active, he can't see, hear, or breathe.