Scalemail

Scalemail (スケイルメイル) is a Quirk used by Shuichi Iguchi, given to him by All For One, who stole it from someone else.

Description
Scalemail allows its user to cover their body with sharp armored scale’s, granting them increased strength and defense.

Weaknesses
When generating the scales necessary for defense, it causes the user to bleed as they rupture the skin. Any high force of impact can easily break through the armour plating as it cannot withstand very powerful punches, just as shown when Mezo Shoji was able to shatter most of the armor with his Octospansion followed by Present Mic's Voice attack.

Trivia

 * Scalemail is similar to Scales, as both generate scales that cover the body like a protective armor.
 * This Quirk is most likely based off of Scale Armor.