Fierce Gains

Fierce Gains is one of the several Quirks utilized by Gigantomachia.

Description
Fierce Gains allows the user's muscles to harden at exceptionally tough levels.

Gigantomachia uses this Quirk in conjunction with his make-shift body granted by Mole, and his ability to not feel pain to make his skin nearly unable to be pierced by anything.

Trivia

 * The Quirk shares some similarities to Hardening.