Smokescreen

Smokescreen is the Quirk used by En and later inherited by Izuku Midoriya.

Description
Smokescreen allows the user to generate copious amounts of smoke. This serves as a way to obscure the vision of opponents and catch them by surprise.

Weaknesses
If too much smoke is released, the user might have difficulty navigating through the thick haze. This quirk also has no offensive potential, and according to En, can't be raised to the ultimate move level.