Resurrección

is a Zanpakutō release technique exclusive to the Arrancar, similar to that of a Shinigami. Unlike a Shinigami's Zanpakutō however, an Arrancar's Zanpakutō is simply the Arrancar's Hollow powers sealed into the shape of a weapon. By releasing their Zanpakutō in the same manner as a Shinigami, an Arrancar can release his or her Hollow powers. Most known Resurrección give the Arrancar user an animal-like appearance. While most unreleased Shinigami Zanpakutō take the form of a katana or wakizashi, there is a significantly broader range for Arrancar (such as a sai, axe, a more fictionalized weapon like Nnoitra's Zanpakutō, or a body, whole or otherwise, like Aaroniero Arruruerie's Zanpakutō, or Lilynette Gingerback).



Because their powers are sealed in their Zanpakutō, an Arrancar's release will usually transform their body into a Hollow-like form, allowing them to use all of their abilities freely. This form usually reflects what the Arrancar looked like as a Hollow, although to highly varying degrees. A Resurrección restores an Arrancar to its "true" form, resulting in significantly various increases in speed, strength, stamina, durability and spiritual power, as well as allowing access to both more powerful variations of previous techniques and completely new abilities. Some Arrancar even gain new weapons as a part of their released form. Normally, Arrancar only return to their more Human form when they reseal their Hollow powers; doing so without resealing, though possible, is a permanent change comparable to amputating a limb. By going through such trouble to seal their power, Arrancars can maintain a Human form and conserve their power in times of inactivity.

Ulquiorra Cifer, the 4th Espada, has demonstrated the ability to attain a second form of Resurrección called "Segunda Etapa" (Second Step); however, he claims that he is the only Espada with this ability, and that even Aizen had no knowledge of the transformation.