Nulviedo Vacio
Resurrección name: Void Prison
Basic appearance and physique
His body was slender and elongated, made entirely of deathly white bone, without any excess hair; his head was smooth and featureless, with only a narrow vertical slit for a mouth; faint, murky black spiritual mist swirled around him, his torso was hollow and transparent, and fine patterns of holes covered his body; his build fell between that of a Menos Grande and an Arrancar, and his transformation into an Arrancar was incomplete. Like Wonderweiss, he was a Hollow custom-modified by Aizen, simple-minded and acting only on Aizen's commands.
Ability: exclusive core ability: Void Cage
Created a barrier space of nothingness to seal away all targets.
Space activation: he raised his hand to gather pitch-black Reiatsu, opening a spherical domain of black nothingness before him. Its inner walls completely cut off outside Reiatsu, Kidō, Zanpakuto power, and the flow of Resurrección/Bankai energy.
Sealing effect
Anyone swallowed into the space could not mobilize Reiatsu or unleash techniques. Their Zanpakuto fell completely dormant and could not be released, and all energy-based abilities ceased to function; there was no air, light, or Reishi inside, and the space continuously wore away the soul's spiritual power.
Space control: he could freely determine whether the space opened or closed and how large it was. He could briefly trap enemies to hold them back or permanently close the void space, sealing targets completely within another dimension with no way out.
Weaknesses: his own close-combat ability was poor, and he relied solely on his spatial ability to fight. His physical defenses were extremely low, and his body would collapse if struck, but the void ability would not disappear.
Origin: a special Hollow Aizen had sought out to counter Yoriichi Tsugikuni. He sacrificed everything else to strengthen only its