Permeation

Permeation is a Quirk used by Mirio Toogata.

Description
Through his Quirk, Mirio is able to phase through anything solid or liquid, including the ground itself, allowing him to travel through walls and avoid enemy attacks.

Mirio is able to restrict the effects of his Quirk only to individual limbs. While entirely permeated, everything passes through Mirio's body, including air, light and sound, effectively leaving him blind and deaf, as well as breathless. However, he still possesses mass, meaning he's affected by gravity and will fall down when using his Quirk above the ground. His clothes also fall off when his Quirk is activated.

Mirio's Quirk also features a peculiar property; whenever he deactivates his Quirk while inside a large solid mass such as the underground, his body instantly gets catapulted out, giving off the illusion that he's teleporting after descending into the ground. Thanks to rigorous training, Mirio was able to master transportation through this application, being able to adjust the direction his body falls when intangible to control the angle and position of the trajectory of his catapulting.