 In the anime, Halibel's backstory as a shark-like Vasto Lorde, in which she gathers female Menos to work together against more aggressive male Menos that consider them easy prey, is revealed.After saving the three Adjuchas named Emilou Apacci, Franceska Mila Rose, and Cyan Sung-Sun, who joined her campaign, Halibel becomes at odds with Baraggan for defying him and made an enemy out of a Hammerhead hollow who attacked her group once becoming an arrancar.Only able to survive because of Aizen's intervention, touched by his speech of not wanting needless sacrifice, Halibel joins his group with her three comrades becoming her Fracciónes