Anima Rippers

The Anima Rippers (Soul Rippers) are a powerful group of traitor Shinigami and Arrancar.

History
The group was started from a woman only named 'Kenshe', who was a powerful Quincy that died and turned into a Hollow, later breaking her mask and becoming an Arrancar. Kenshe was later killed by Kumiko Yokoyama, a traitor Soul Reaper who was the former captain of the 9th Division. Kumiko took Kenshe's place, and was later killed by Aisha Takahasi after invading the Soul Society, leading to the demise of the Anima Rippers.

Headquarters
The Anima Rippers headquarters is located in an unknown area of Hueco Mundo. The area has never been found by anyone else besides the Anima Rippers.