Hooleer

is a large entity that appears to be fighting alongside Sōsuke Aizen. Its true nature remains unknown, but it seems to have a connection with Gillian-class Menos, suggesting that it is indeed a Hollow.

Character Outline
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 his skin. It also has the masks of Gillian-class Menos for fingernails. It had a brief appearance early in the series, but made its proper debut during Aizen's invasion of the Fake Karakura Town. It is arguably the largest creature seen in the series yet.

Soul Society arc
It first makes a short appearance as Sōsuke Aizen, Gin Ichimaru, and Kaname Tōsen are being extracted from Sōkyoku Hill via Negación. Its partially closed eye can be 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 Fūrā. It is evident that it dwarfs the other combatants in terms of size. While Wonderweiss attacks Jūshirō Ukitake, Fūrā uses its breath to extinguish the fire prison that is trapping Aizen, Gin and Kaname, thus freeing them. After Wonderweiss screams, it releases Gillians from his mouth to attack the Visored. After the Visored kill the last Gillian, Mashiro Kuna attacks it with her Mashiro Super Kick, killing it, while Wonderweiss simply stares. Following Mashiro's attack, Ichimaru comments on how easily she took out Fūrā even though it was Wonderweiss's favorite.

Powers & Abilities

 * Fūrā's breath is powerful enough to extinguish the prison of fire made by Genryūsai Shigekuni Yamamoto's Zanpakutō's ability, Jōkaku Enjō. It is said that it "smells of death."

Menos Reproduction: It is shown to be able to spawn numerous Gillian-class Menos from its mouth. At first, it looks like a mass of black liquid and masks, until the Gillian Menos separate into their individual forms.

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

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