Henkei (BSC)

Henkei are described as entities that sunder the boundary between Arrancar and Shinigami or Vizards and Hollows, the perfect blurring of Hollows and Human Souls, creating extremely powerful entities that choose the allegiance of a new King rather than exist in the domain of the Soul King and the prejudices of Soul Society.

This faction is the Main antagonists of the first Arcs of Bleach Shirokuro Chronicles, they appear however as Supporting Allies to the Protagonist once it is revealed that Soul Society wants to genocide their culture, finding it abnormal while they just want to live independently of Soul Society's laws.

History
The Henkei were originally formed within the last decade, the wishes of Sōsuke Aizen causing the Hōgyoku

Trivia

 * Henkei is a Japanese word that can be used to mean "deformation", "variation", "deformity", "modification", "transformation", "metamorphosis", "variety" and "monster".