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Skin Hardening

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The ability to harden one's skin. Sub-power of Skin Manipulation. Variation of Dermal Armor.

Also Called

  • Harden
  • Hierro (Iron)
  • Skin Reinforcement/Toughening
  • Tekkai (Iron Body)


The user is capable of hardening their skin, increasing their defensive and/or offensive capabilities.




  • Can be countered by Defense Break.
  • User may be slowed or rendered immobile while this power is active.

Known Users


  • Kaku (Akame ga Kill!)
  • Arrancar (Bleach)
  • Kenpachi Zaraki (Bleach)
  • Cang Du (Bleach)
  • Gremmy Thoumeaux (Bleach)
  • Users of Blut Vene (Bleach)
  • James Ironside (Blood+)
  • Ryuichi Sendo (Code:Breaker)
  • Ki users (Dragon Ball)
  • Eclipse Pisces (Fairy Tail)
  • Greed (Fullmetal Alchemist)
  • Sylar (Heroes)
  • Chuuoh (Houshin Engi)
  • Kongoh family (Kongoh Bancho)
  • Fudo (Naruto: Shippuden)
  • Hiruko (Naruto: Shippuden)
  • Kakuzu (Naruto: Shippūden)
  • Users of Busoshoku Haki (One Piece)
  • Users of Tekkai (One Piece)
  • Garon (Marchen Awakens Romance)
  • Ruin (The Seven Deadly Sins)
  • Tetsuhito Kagiroi (Tenjho Tenge)
  • Yaya (Unbreakable Machine-Doll)
  • Female Titan (Attack on Titan)
  • Eren Yeager (Attack on Titan)
  • Momotaro Tsurugi (Sakigake Otokojuku)
  • Eijirou Kirishima (Boku No Hero Academia)
  • Parasites (Kiseijū Sei no Kakuritsu)
  • Tsukune Aono (Rosario + Vampire)

Video Games

  • Sekka (Double Dragon V)
  • Steven Armstrong (Metal Gear Rising: Revengeance)
  • Parasite Unity (Metal Gear Solid V: The Phantom Pain)
  • The Lone Wanderer (Fallout 3); via barkskin perk
  • Pokémon that can use Harden (Pokémon)
  • Pokémon that can use Iron Defense (Pokémon)
  • Pokémon that can use Iron Tail (Pokémon)
  • Ghirahim (The Legend of Zelda: Skyward Sword)
  • Ridley (Metroid); in some of the game series

Western Series

  • Ethan James (Power Rangers: Dino Thunder)
  • Mister Shifter (Sonic the Comic)
  • Brass Body (The Man with the Iron Fists)


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