Tier Harribel/Expanded Universe

is an Arrancar and the former Tres (3rd) Espada in Sōsuke Aizen's army until the latter's defeat. Sometime after Aizen's defeat, she becomes the de facto ruler of Hueco Mundo.

Fake Karakura Town arc (Bleach Official Character Book 3 UNMASKED)
When Captain Mayuri Kurotsuchi switched the real Karakura Town back to the Human World and brought the fake Karakura Town to Soul Society, the Arrancar who had passed out with deep wounds were transferred to Soul Society. Having come from Hueco Mundo to Soul Society through a Garganta with Rukia Kuchiki to meet up with Ichigo Kurosaki after he finished his battle against Sōsuke Aizen, Orihime Inoue was led by Emilou Apacci and began healing their wounds. On Harribel's body, there were two deep wounds; one was a deep, straight cut, which went straight through the side of her chest, made by Aizen's Zanpakutō, Kyōka Suigetsu, and the other cut went from her back to her womb. The wounds could have lead to death, and no one besides Orihime possessed the ability to save the fallen Espada. After returning to Hueco Mundo via Garganta, Harribel and her Fracción looked upon the destruction which came from the various battles which took place.

The Arrancar were greeted by Kukkapūro, the Hollow dog, whom they recognized as Yammy Llargo's companion. Feeling what was left of Yammy's Reiatsu, Harribel and the others determined the powerful Espada fought with all his might before dying. They realized the Adjuchas Hollows had detected their presence and would arrive shortly, for they were now able to approach Las Noches due to the absence of the powerful Espada. All four understood it would not be long before the fighting normal to the Hollows of Hueco Mundo would begin again. Harribel became distressed at the concept, for preventing it was her reasoning for joining Aizen, but now it would return, and she could not stop it from happening. Cyan Sung-Sun suggested now that Baraggan Louisenbairn was dead and Aizen was gone, she should rule Hueco Mundo in their place. Franceska Mila Rose and Apacci agreed it would be the best course of action, but Harribel disagreed, stating a fake sun could not bring light to the darkness of Hueco Mundo, and all which is truly needed is the silent darkness. Harribel began to make her way toward Las Noches, with her loyal Fracción following behind.

Powers & Abilities
Immense Spiritual Power: