Steel

Steel is a Quirk used by Tetsutetsu Tetsutetsu.

Information
This Quirk allows Tetsutetsu to turn his body into steel. It can be used as both the strongest defense and the strongest attack. It is implied that he needs to ingest iron in order to sustain his quirk.

Trivia

 * This Quirk is very similar to Hardening, but turns the user's body into steel.