Hooleer

is a large Hollow in the service of Sōsuke Aizen.

Appearance
It has a bulbous body, long tufts of hair on its back, and a single, large eye which is purple inside the Garganta and yellow outside of it. Its hair appears to be the same or a similar color to its skin. It has Gillian masks for fingernails.

Soul Society arc
It is present when Sōsuke Aizen, Gin Ichimaru, and Kaname Tōsen are being extracted from Sōkyoku Hill via Negación. Its partially closed eye is briefly seen behind the mass of Gillians present within the Garganta, but the rest of its body remains hidden.

Fake Karakura Town arc
Wonderweiss Margela appears during the Gotei 13's battle with the Espada, bringing Hooleer with him. It dwarfs the other combatants in terms of size. While Wonderweiss attacks Jūshirō Ukitake, Hooleer uses its breath to extinguish the fire prison which is trapping Aizen, Gin, and Tōsen, freeing them. After Wonderweiss screams, it releases Gillians from its mouth to attack the Visored. After the Visored kill the last Gillian, Mashiro Kuna attacks it with her Mashiro Super Kick, killing it, as Wonderweiss stares. Following Mashiro's attack, Gin comments on how easily she took out Hooleer even though it was Wonderweiss's favorite.

Powers & Abilities

 * Hooleer's breath is powerful enough to extinguish the prison of fire made by Genryūsai Shigekuni Yamamoto's Jōkaku Enjō. Kaname Tōsen stated that its breath "smells of death."

Menos Production: It can spawn numerous Gillian-class Menos from its mouth. It looks like a mass of black liquid and masks until the Gillian Menos separate into their individual forms.

Appearances in other Media
Hooleer appears as one of Aizen's special moves in Bleach: Blade Battlers 2nd, where it spits out Gillians to attack.

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