Fate in Bleach: Unlimited Blade Works! - Chapter 235: Great God Ōmaeda?

... r the Soul Society, had sought to neutralize Head-Captain Yamamoto's formidable Zanpakutō, Ryūjin Jakka. He had extracted Aaroniero Arruruerie's reishi, hoping to cultivate a Hollow capable of devouring all Zanpakutō.

That plan had failed.

Aizen had then settled for a Hollow that could neutralize flames, eventually creating "Wonderweiss Margela, the Extinguisher."

It was Wonderweiss who had ultimately crippled Head-Captain Yamamoto, allowing Aizen to breach the Dangai and ...