Hierro

"We Arrancar have skin of Hierro. It's like heavy armor! I can defeat you with my bare hands!" — Edrad Liones in "MALA SUERTE!"

Hierro
Kanji	鋼皮 (イエロ)
Rōmaji	Iero
English	Spanish for "Iron," Japanese for "Steel Skin"
Information
Technique Type	Arrancar Technique
User	Arrancar

Hierro (鋼皮 (イエロ), Iero; Spanish for "Iron", Japanese for "Steel Skin"; Viz "Iron Skin") is a defensive Arrancar technique.

Description

The user's Reiryoku condenses, creating steel-hard skin strong enough to block a Zanpakutō. This allows users to confront some of the sword-wielding Shinigami barehanded. In general, the strength of an individual's Hierro is proportional to the potency of their Reiryoku, though this is not a rule as Nnoitra Gilga has the hardest Hierro out of the Espada despite being ranked #5. Hierro is not absolute and opponents can adapt to cut through it, such as when 11th Division Captain Kenpachi Zaraki fought Nnoitra.

Trivia

• In the English dub of the Bleach anime, Hierro was mistakenly identified as Cero when Ulquiorra Cifer spoke about Ichigo being able to effortlessly cut off Yammy Llargo's arm.