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The Dyaus Pita (God Eater Resurrection) is an Aragami introduced in said game, a variant of the existing Dyaus Pita. It is Resurrection's flagship Aragami and replaces the other variant in all but a single encounter.
The following information is taken from the offical in-game descriptions of the Aragami found in the NORN Terminal's database.
God Eater Resurrection
This Vajra-class Divine Type 1 Deusphage Aragami was first confirmed by the Far East Branch during the mission "Moon in the Welkin". Has a jet black body and a human face with a cruel expression.
It conceals wing-like limbs under its cloak that it reveals when threatened and uses to unleash a devastating amount of energy.
ATK Elements: Spark, Divine
It is similar in appearance to the original Dyaus Pita, but it has its differences: it is gray in color instead of black, it possesses a modified facial structure, and sinister skeletal wings sprout from its back, replacing its usual "cape."
It will transform after losing a quarter of its HP, it will be recognizable by the red circle appearing along with that the cape will shrink and its pair of bladed wings will grow. During this sequence the resistances for the Dyaus Pita will be raised significantly, easily cutting damage down to a tenth even on the weak points. This will last a few seconds after it will roar, signaling that the change finalized.
Many of its moves consist of multiple stages (like the Chrome Gawain and its variant), so it is advisable to stay on guard even after it finishes its initial attack.
Its attack repertoire consists of dashing slashes, periodic bursts of lightning around it, lightning bolts thrown from above, and a double spin accompanied by lightning in a wide radius, in addition to the original Dyaus Pita's attacks.
This Aragami also appears in the Anime series since the fifth episode, where it kills a herd of Vajras before defeating the God Eaters on that mission (Lenka, Alisa, Sakuya and Kota), grievously wounding Lenka and destroying his God Arc, and slaughtering civilians who happened to be nearby. The monster does this all the while showing some degree of intelligence by targeting the largest threats first. After the episode, the Aragami becomes a recurrent encounter for the God Eaters of the Far East Branch.