Resurrecion Information
Name: Murcielago.
Represent: Bat
Family: Shadow/Dark
Looks: Murciélago unleashes with a burst of spiritual energy that falls around Ulquiorra as black rain. In his released state, Ulquiorra becomes bat-like in appearance. He gains giant wings on his back, his hair becomes longer and wilder on the left side of his head, and the remains of his Hollow mask centers atop his head, with two large horns extending outward to the sides towards the front. The lines on his face become broader and more triangular and his fingernails lengthen. His Arrancar attire becomes more form fitting and closed at the top, becoming more like a robe towards the bottom. In this form, he uses an energy spear instead of a sword.
Techniques
Resurrección Special Ability: He is shown to have the ability to create elongated spike-like javelins. His speed and endurance is greatly enhanced to the point that Ichigo's hollow mask-enhanced Bankai has difficulty keeping up, let alone damaging him. His Hierro has also vastly increased in strength to the point where a Getsuga Tenshō with Ichigo's mask activated has no effect at all. Ulquiorra also has the unique ability to enter a second released form, called Resurrección Segunda Etapa.
Cero Oscuras (黒虚閃, (セロ・オスキュラス), sero osukyurasu; Spanish for "Dark Zero", Japanese for "Black Hollow Flash"): It is a black Cero, which Ulquiorra states to be similar to Ichigo's black Getsuga Tenshō. This Cero presumably can only be used while he is in his release state. Ulquiorra's Cero Oscuras is powerful enough to blast Ichigo's mask away and destroy a large part of the city-sized Las Noches' dome. Ulquiorra refers to it as "my Cero",[7] so it may be exclusive to him. It is also possible that the Cero Oscuras is just a vastly powerful version of the Cero. Since the color of the Cero changes depending on who uses it, the "Oscuras" in its name may simply refer to the fact that his version is black.
* Resurrección: Segunda Etapa (刀剣解放第二階層 (レスレクシオン・セグンダ・エターパ), resurekushion segunda etāpa; Spanish for "Resurrection Second Stage", Japanese for "Sword's Release: Second Level") Upon his transformation, Ulquiorra boasts that he is the only Arrancar among the Espada who has achieved a second Resurrección form, which supposedly has remained a secret from Aizen. Ulquiorra refers to his second state as "True Despair", both before and after its release, likely because the immensely dense spiritual pressure it releases instills despair upon those around him. While he retains his black wings, his long white coat is gone, revealing a more defined musculature with his chest bare and Hollow hole (which has become larger) dripping black, blood-like liquid. His waist becomes covered in something similar to black fur or cloth, which also covers his arms and legs. His fingers grow claw-like extensions and his feet become like talons. His irises of his eyes turn yellow while the sclera becomes green. The tear-like marks under his eyes increase and turn black. Ulquiorra's mask remains turn into two long horns, and the #4 Espada tattoo is no longer visible on his chest. He grows a very long and thin but powerful tail which is capable of being used as a weapon or to lift and strangle a victim.
* Overwhelming Spiritual Power: Ulquiorra's already vast spiritual power is significantly increased furthermore upon entering his second stage. Even being within the vicinity of his release instills despair on those who can sense it. Uryū Ishida, a Quincy who is an expert at sensing reiatsu, noted that the density of Ulquiorra's spiritual power was so vast that it could hardly be identified as reiatsu. "It's like no spiritual energy I've ever felt before...It's not just bigger or stronger. It's too dense and heavy to even be called spiritual energy. It feels like there's an ocean above the sky..." [8] It is likely the second release increases Ulquiorra's speed and strength.
* Instantaneous Cero Oscuras: In his second state, Ulquiorra can use a fully powered Cero Oscuras without having to charge it. In addition, the blast travels very swiftly, with speed comparable to that of a Bala. The Cero retained its enormous power from Ulquiorra's previous form, being so powerful that it was able to blow a large hole through Ichigo's chest.
* Lanza del Relámpago (雷霆の槍 (ランサ・デル・レランパーゴ), ransa deru reranpāgo; Spanish for "Lance of the Lightning", Japanese for "Lance of Thunder and Lightning"): Ulquiorra creates a javelin-like weapon using his spiritual power, which he can use as a projectile or as a physical weapon. When thrown, it produces an incredibly-destructive explosion on impact, which dwarfs the fortress of Las Noches in height. Ulquiorra prefers to not use the attack at close range, most likely because the resulting blast would damage himself as well as Las Noches. While he can use these spears in rapid succession, he has difficulty controlling their trajectory. Ulquiorra is also able to use this attack as a blade, as seen when he used it to sever one of Hollow Ichigo's horns to prevent him from using a Cero on Uryū
