White

White is an experimental Hollow used by Sōsuke Aizen many years prior to his defection from Soul Society.

Appearance
White is an almost completely black Hollow, with a white mask and long, light colored hair. It has two long forward-pointing horns protruding from the sides of its head and its Hollow hole is located in its upper chest but is filled in. It has two blades in place of its lower arms.

Personality
White exhibited a cold, calculated personality. It did not respond when questioned by Isshin Kurosaki.

History
Some time ago, White was created as part of Aizen's research. It killed a number of Shinigami in Naruki City, prompting the arrival of Captain Isshin Shiba to investigate. When Isshin tried to lure it out by blasting large amounts of Reiatsu, White attacked two Shinigami that were sheltering nearby before confronting Isshin. It fought with Isshin until another Shinigami approached. White turned its attention to the new arrival and fired a Cero at him before resuming its battle with Isshin. As the captain released his Shikai, he was cut down by Aizen. The Hollow continues to exchange blows with the injured Isshin until Masaki Kurosaki attacks it. White avoids her attacks and charges towards her, biting her shoulder. She promptly fires an arrow at point-blank range, straight through its head.