Findorr Calius

Findor appears to be able to summon hollows by whistling as shown when he was ordered to destroy the four pillars that keep the real Karakura Town in Soul Society, though this is, most possibly, an ability shared, but not demonstrated by other high-ranking, Arrancar or even non-arrancar MenosAdjuchas.

He first appears along with Barragan and the rest of his Fracción in the fake Karakura Town to do battle with the Gotei 13. Once Aizen, Ichimaru, and Tōsen are blocked off by Yamamoto's shikai, Barragan himself decides to give all orders. Findor is then ordered to summon four gigantic hollows to destroy the four pillars that keep the real Karakura Town in Soul Society. The hollows are killed however by Shūhei Hisagi, Izuru Kira, Yumichika Ayasegawa and Ikkaku Madarame, who are protecting the pillars. In response, Barragan sends each member of his Fracción to a different pillar stating that if they are going to guard them using ants he'll just have to send dragons to crush them.

Findor is sent to do battle with Shūhei Hisagi. The two duel for a while before Hisagi comments that his power appears only at that of a fifth seat. Findor replies that he has passed this test and he will now fight at a lieutenant's level. Using the knife attached to his wrist he begins breaking off fragments of his mask increasing his power each time, finally breaking off half saying he is at lieutenant level. After fighting for some time Findor finds that Shūhei isn't fighting at the level he believes to be lieutenant as Shūhei is the only one that is tired. Wanting to finish the battle, Findor releases his zanpakutō.

After fighting for a while longer he forces Shūhei to release his own zanpakutō much to Findor's own surprise. He later removes 90% of his mask and told Shūhei that he's power is now Captain-level, but he was defeated by Shūhei instead. His current fate is unknown, but he's believed to be dead.

Curiously, his hollow mask appears to act as some kind of inhibitor on his powers (similar to Kenpachi's eye-patch), and by breaking fragments of it off with the knife on his wrist, it can increase his power exponentially. When whole, his power level is equal to that of a fifth seat Shinigami, and when half of his mask he is broken he is as strong as a Lieutenant Zanpakutō Findor's zanpakutō is named Pinza Aguda (Pinsagūda; Spanish for "sharp pincer," Japanese for "crab sword cutting current") and its release command is "Engrave in the water surface" (minamo ni kizame). Its sealed form resembles a Spanish épée or rapier. When released, it wraps around his right arm to form a giant crustacean claw.

In this form, Findor can fire high-pressure streams of water from his claw that are powerful enough to easily cut through buildings.